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Proto-Indo-European mythology is the body of myths and stories associated with the Proto-Indo-Europeans, the hypothetical speakers of the reconstructed Proto-Indo-European language. Although these stories are not directly attested, they have been reconstructed by scholars of comparative mythology based on the similarities in the belief systems of various Indo-European peoples.
Various schools of thought exist regarding the precise nature of Proto-Indo-European mythology, which do not always agree with each other. The main mythologies used in comparative reconstruction are Vedic, Roman, and Norse, often supported with evidence from the Baltic, Celtic, Greek, Slavic, and Hittite traditions as well.
The Proto-Indo-European pantheon includes well-attested deities such as *Dyḗus Pḥₐtḗr, the god of the daylit skies, his consort *Dʰéǵʰōm, the earth mother, his daughter *Hₐéusōs, the goddess of the dawn, the divine twins, and the storm god *Perkʷunos. Other probable deities include *Péh₂usōn, a pastoral god, and *Seh₂ul, a female solar deity.
Well-attested myths of the Proto-Indo-Europeans include a myth involving a storm god who slays a multi-headed serpent that dwells in water and a creation story involving two brothers, one of whom sacrifices the other to create the world. The Proto-Indo-Europeans may have believed that the Otherworld was guarded by a watchdog and could only be reached by crossing a river. They also may have believed in a world tree, bearing fruit of immortality, either guarded by or gnawed on by a serpent or dragon, and tended by three goddesses who spun the thread of life.
Methods of reconstruction
Schools of thought
The mythology of the Proto-Indo-Europeans is not directly attested and it is difficult to match their language to archaeological findings related to any specific culture from the Chalcolithic. Nonetheless, scholars of comparative mythology have attempted to reconstruct aspects of Proto-Indo-European mythology based on the existence of similarities among the deities, religious practices, and myths of various Indo-European peoples. This method is known as the comparative method. Different schools of thought have approached the subject of Proto-Indo-European mythology from different angles. The Meteorological School holds that Proto-Indo-European mythology was largely centered around deified natural phenomena such as the sky, the Sun, the Moon, and the dawn. This meteorological interpretation was popular among early scholars, such as Friedrich Max Müller, who saw all myths as fundamentally solar allegories. This school lost most of its scholarly support in the late nineteenth and early twentieth centuries.
The Ritual School, which first became prominent in the late nineteenth century, holds that Proto-Indo-European myths are best understood as stories invented to explain various rituals and religious practices. The Ritual School reached the height of its popularity during the early twentieth century. Many of its most prominent early proponents, such as James George Frazer and Jane Ellen Harrison, were classical scholars. Bruce Lincoln, a contemporary member of the Ritual School, argues that the Proto-Indo-Europeans believed that every sacrifice was a reenactment of the original sacrifice performed by the founder of the human race on his twin brother.
The Functionalist School holds that Proto-Indo-European society and, consequently, their mythology, was largely centered around the trifunctional system proposed by Georges Dumézil, which holds that Proto-Indo-European society was divided into three distinct social classes: farmers, warriors, and priests. The Structuralist School, by contrast, argues that Proto-Indo-European mythology was largely centered around the concept of dualistic opposition. This approach generally tends to focus on cultural universals within the realm of mythology, rather than the genetic origins of those myths, but it also offers refinements of the Dumézilian trifunctional system by highlighting the oppositional elements present within each function, such as the creative and destructive elements both found within the role of the warrior.
One of the earliest attested and thus most important of all Indo-European mythologies is Vedic mythology, especially the mythology of the Rigveda, the oldest of the Vedas. Early scholars of comparative mythology such as Friedrich Max Müller stressed the importance of Vedic mythology to such an extent that they practically equated it with Proto-Indo-European myth. Modern researchers have been much more cautious, recognizing that, although Vedic mythology is still central, other mythologies must also be taken into account.
Another of the most important source mythologies for comparative research is Roman mythology. Contrary to the frequent erroneous statement made by some authors that "Rome has no myth", the Romans possessed a very complex mythological system, parts of which have been preserved through the characteristic Roman tendency to rationalize their myths into historical accounts. Despite its relatively late attestation, Norse mythology is still considered one of the three most important of the Indo-European mythologies for comparative research, simply due to the vast bulk of surviving Icelandic material.
Baltic mythology has also received a great deal of scholarly attention, but has so far remained frustrating to researchers because the sources are so comparatively late. Nonetheless, Latvian folk songs are seen as a major source of information in the process of reconstructing Proto-Indo-European myth. Despite the popularity of Greek mythology in western culture, Greek mythology is generally seen as having little importance in comparative mythology due to the heavy influence of Pre-Greek and Near Eastern cultures, which overwhelms what little Indo-European material can be extracted from it. Consequently, Greek mythology received minimal scholarly attention until the first decade of the 21st century. 
Although Scythians are considered relatively conservative in regards to Proto-Indo-European cultures, retaining a similar lifestyle and culture, their mythology has very rarely been examined in an Indo-European context and infrequently discussed in regards to the nature of the ancestral Indo-European mythology. At least three deities, Tabiti, Papaios and Api, are generally interpreted as having Indo-European origins, while the remaining have seen more disparate interpretations. Influence from Siberian, Turkic and even Near Eastern beliefs, on the other hand, are more widely discussed in literature.
There was a fundamental opposition between the never-ageing gods above in the skies, and the terrestrial and mortal humans beneath on earth. The earth *dhéǵhōm was perceived as a vast, flat and circular continent surrounded by waters ("the Ocean").
The Proto-Indo-European worldview most likely featured a superordinate principle of natural order, universal balance and equilibrium that was highest in hierarchy. Linguistically the names of the reflections of this superordinate principle in the various Indo-European cultures can be derived from the PIE form *h₂r-tós "properly joined, right, true", from a presumed root *h₂er-, cf. the Vedic ऋत ṛta, the Roman Veritas, the Norse Urða, etc. The meaning of the Vedic Ṛta is "fixed or settled order, rule, universal law, fate or truth". All beings in the Proto-Indo-European cosmos are considered to be bound to this superordinate principle: plants, animals, humans, and deities. This highest principle is thought to be the unification of two perfectly balanced complementary principles. This unification of perfectly balanced complementary principles is the root of the balancing and equilibrium aspect of the superordinate principle and it also is reflected in the Proto-Indo-European language; terms that describe opposites are derived from an identical (unifying) root word, i.e. *leuk- ('radiant, light') – *leug- ('dark') ; *yeu- ('to join') – *yeu- ('to separate') *ghos-ti- ('a host') — *ghos-ti- ('a guest').
The analysis of different Indo-European tales indicates that the Proto-Indo-Europeans believed there were two progenitors of mankind: *Manu- ("Man") and *Yemo- ("Twin"), his twin brother. A reconstructed creation myth involving the two is given by David W. Anthony, attributed in part to Bruce Lincoln: Manu and Yemo traverse the cosmos, accompanied by the primordial cow, and finally decide to create the world. To do so, Manu sacrifices his twin Yemo (or the cow), and with help from the Sky-Father, the Storm-God and the Divine Twins, forges the earth from Yemo's remains. Manu thus becomes the first priest, initiating both sacrifice and human laws. To the third man, *Trito, the celestial gods then present the cattle, which is stolen by a three-headed serpent named *Ngʷhi. Trito eventually overcomes the monster, either alone or aided by the Sky-Father, and gives the recovered cattle to a priest for it to be sacrificed. Trito is now the first warrior and ensures that the cycle of mutual giving between gods and humans may continue. Reflexes of *Manu include Indic Manu, Germanic Mannus; of Yemo, Indic Yama, Avestan Yima, Norse Ymir, possibly Roman Remus (< earlier Old Latin *Yemos).
Ramchandra N. Dandekar proposed that the primeval being *Yemo- is not a twin brother of *Manu-, but instead a two-folded hermaphrodite, a pair of two complementary beings twisted or entwined together. In Norse mythology, the name of the primeval being Ymir translates as twin, double being or hermaphrodite, and it may be the case for the Indian Yama. In this interpretation, the primordial hermaphrodite (or twin) is sacrificed or self-sacrifices, and from its corpse the world emerges. This theory has been contested on the ground that yamá nowhere denotes "hermaphrodite" in the ancient Sanskrit tradition.
In the cosmogonic myths of many Indo-European cultures a Cosmic Egg symbolizes the primordial state from which the universe arises. This pre-state or ground state that is described as a primordial void in that two perfectly balanced, complementary quantities emerge (i.e. fire and ice in Norse mythology or breath as inhaling and exhaling or respectively the double-being in the world egg). The two complementary quantities form a union, subsequently this union is separated what causes the universe, symbolized as the world tree, to come into existence.
The Germanic languages have information about both Ymir and Mannus (reflexes of *Yemo- and *Manu- respectively), but they never appear together in the same myth. Instead, they only occur in myths widely separated by both time and circumstances. In chapter two of his book Germania, which was written in Latin in around 98 A.D., the Roman writer Tacitus claims that Mannus, the son of Tuisto, was the ancestor of the Germanic peoples. This name never recurs anywhere in later Germanic literature, but one proposed meaning of the continental Germanic tribal name Alamanni is "Mannus' own people" ("all-men" being another scholarly etymology).
The early "history" of Rome is widely recognized as a historicized retelling of various old myths. Romulus and Remus are twin brothers from Roman mythology who both have stories in which they are killed. The Roman writer Livy reports that Remus was believed to have been killed by his brother Romulus at the founding of Rome when they entered into a disagreement about which hill to build the city on. Later, Romulus himself is said to have been torn limb-from-limb by a group of senators.[a] Both of these myths are widely recognized as historicized remnants of the Proto-Indo-European creation story.
Most Indo-European traditions contain some kind of Underworld or Afterlife. It is possible that the Proto-Indo-Europeans may have believed that, in order to reach the Underworld, one needed to cross a river, guided by an old man (*ĝerhₐont-). The Greek tradition of the dead being ferried across the river Styx by Charon is probably a reflex of this belief. The idea of crossing a river to reach the Underworld is also present throughout Celtic mythologies. Several Vedic texts contain references to crossing a river in order to reach the land of the dead and the Latin word tarentum meaning "tomb" originally meant "crossing point." In Norse mythology, Hermóðr must cross a bridge over the river Giöll in order to reach Hel. In Latvian folk songs, the dead must cross a marsh rather than a river. Traditions of placing coins on the bodies of the deceased in order to pay the ferryman are attested in both ancient Greek and early modern Slavic funerary practices. It is also possible that the Proto-Indo-Europeans may have believed that the Underworld was guarded by some kind of watchdog, similar to the Greek Cerberus, the Hindu Śárvara, or the Norse Garmr. The king of the Otherworld may have been Yemo, the sacrificed twin of the creation myth.
The belief in reincarnation was common in many ancient Indo-European cultures. Beside rebirth in plants, animals and humans it was also considered possible to be reborn in non-physical places like heavens and hells.
World tree and serpent
The Proto-Indo-Europeans may have believed in some kind of world tree (axis mundi). It is also possible that they may have believed that this tree was either guarded by or under constant attack from some kind of dragon or serpent. In Norse mythology, the cosmic tree Yggdrasil is tended by the three Norns while the dragon Nidhogg gnaws at its roots. In Greek mythology, the tree of the golden apples in the Garden of the Hesperides is tended by the three Hesperides and guarded by the hundred-headed dragon Ladon. In Indo-Iranian texts, there is a mythical tree dripping with Soma, the immortal drink of the gods and, in later Pahlavi sources, a malicious lizard is said to lurk at the bottom of it.
Several traditions reveal traces of an Indo-European eschatological myth that describes the end of the world following a cataclysmic battle. The story begins when the major foe, usually coming from a different and inimical paternal line, assumes the position of authority among the host of gods or heroes: Norse Loki, Roman Tarquin, Irish Bres. A new leader then springs up (e.g. Irish Lug, Greek Zeus) and the two forces come together to annihilate each other in a cataclysmic battle.
Linguists have been able to reconstruct the names of some deities in the Proto-Indo-European language (PIE) from many types of sources. Some of the proposed deity names are more readily accepted among scholars than others.[b] According to philologist Martin L. West, "the clearest cases are the cosmic and elemental deities: the Sky-god, his partner Earth, and his twin sons; the Sun, the Sun Maiden, and the Dawn; gods of storm, wind, water, fire; and terrestrial presences such as the Rivers, spring and forest nymphs, and a god of the wild who guards roads and herds".
Even at the archaic stage (4500-4000),[c] when the language did not make yet formal distinctions between masculine and feminine and the beliefs were still animistic, it is likely that each deity was conceived as either male or female. Archaic Indo-European had indeed a two-gender system which simply distinguished between animate and inanimate, i.e. between the deified and the common word. For instance, fire as an active principle was *hₓn̩gʷnis (Latin ignis ; Sanskrit Agní), while the inanimate, physical entity was *péh₂ur (Greek pyr ; English fire). Most of the goddesses attested in later Indo-European mythologies come from pre-Indo-European deities eventually assimilated into the various pantheons following the migrations, like the Greek Athena, the Roma Juno, the Irish Medb, or the Iranian Anahita. Diversely personified, they were frequently seen as fulfilling multiple functions, while Proto-Indo-European goddesses shared a lack of personification and narrow functionalities as a general characteristic.
It is not probable that the Indo-Europeans had a fixed canon of deities or assigned a specific number to them. The term for "a god" was *deiwós ("celestial"), derived from the root *dyeu, which denoted the bright sky or the light of day. It has numerous reflexes in Latin deus, Old Norse Týr (< Germ. *tīwaz), Sanskrit devá, Avestan daeva, Irish día, or Lithuanian Dievas. In contrast, humans were synonymous of "mortals" and associated with the "earthly" (*dʰéǵʰōm), likewise the source of words for "man, human being" in various languages. Proto-Indo-European believed the gods to be exempt from death and disease because they were nourished by special aliments, usually not available to mortals: in the Chāndogya Upaniṣad, "the gods, of course, neither eat nor drink. They become sated by just looking at this nectar", while the Edda tells us that "on wine alone the weapon-lord Odin ever lives", "he needs no food; wine is to him both drink and meat". Sometimes concepts could also be deified, such as the Avestan mazdā ("wisdom"), worshipped as Ahura Mazdā ("Lord Wisdom"), the Greek god of war Ares (connected with ἀρή, "ruin, destruction"), or the Vedic protector of treaties Mitráh (from mitrám, "contract").
Gods had several titles, typically "the celebrated", "the highest", "king", or "shepherd", with the notion that deities had their own idiom and true names which might be kept secret from humans in some circumstances. In Indo-European traditions, gods were seen as the "dispensers" or the "givers of good things" (*déh₃tōr h₁uesuom). Although certain individual deities were charged with the supervision of justice or contracts, in general the Indo-European gods did not have an ethical character. Their immense power, which they could exercise at their pleasure, necessitated rituals, sacrifices and praise songs from humans to ensure they would in return bestow favorable fate to the community. The idea that gods were in control of the nature was translated in the suffix *-nos (feminine -nā), which signified "lord of". It is attested in Greek Ouranos ("lord of rain") and Helena ("mistress of sunlight"), Germanic *Wōðanaz ("lord of frenzy"), Gaulish Epona ("goddess of horses"), Lithuania Perkūnas ("lord of oaks"), and perhaps in Roman Neptunus ("lord of waters"), Volcanus ("lord of fire-glare"), and Silvanus ("lord of woods").
The head deity of the Proto-Indo-European pantheon was the god *Dyḗus Pḥₐtḗr, whose name literally means "Sky Father". Dyēus was the deified daylight sky. He is, by far, the most well-attested of all the Proto-Indo-European deities. His dwelling, the skies, became associated with the "heaven", the seat of the gods, in classic proto-Indo-European. As the gateway to the gods and the father of both the Divine Twins and the goddess of the dawn, Hausos, Dyēus was a prominent deity in the pantheon. According to West, he was however likely not their ruler, or the holder of the supreme power like Zeus and Jupiter.
Due to his celestial nature, Dyēus is often described as "all-seeing", or "with wide vision" in Indo-European myths. It is unlikely however that he was in charge of the supervision of justice and righteousness, as it was the case for the Zeus or the Indo-Iranian Mithra–Varuna duo; but he was suited to serve at least as a witness to oaths and treaties.
The Greek god Zeus, the Roman god Jupiter, and the Illyrian god Dei-Pátrous all appear as the head gods of their respective pantheons. *Dyḗus Pḥₐtḗr is also attested in the Rigveda as Dyáus Pitā, a minor ancestor figure mentioned in only a few hymns. The ritual expressions Debess tēvs in Latvian and attas Isanus in Hittite are not exact descendants of the formula *Dyḗus Pḥₐtḗr, but they do preserve its original structure.
*Hₐéusōs has been reconstructed as the Proto-Indo-European goddess of the dawn. In three traditions (Indic, Greek, Baltic), the Dawn is the "daughter of heaven", *Dyḗus. In these three branches plus a fourth (Italic), the reluctant dawn-goddess is chased or beaten from the scene for tarrying. An ancient epithet to designate the Dawn appears to have been *Dʰuǵhₐtḗr Diwós, "Sky Daughter". Depicted as opening the gates of Heaven when she appears at the beginning of the day, Hausōs is generally seen as never-ageing or born again each morning. Associated with red or golden cloths, she is often portrayed as dancing.
Twenty-one hymns in the Rigveda are dedicated to the dawn goddess Uṣás and a single passage from the Avesta honors the dawn goddess Ušå. The dawn goddess Eos appears prominently in early Greek poetry and mythology. The Roman dawn goddess Aurora is a reflection of the Greek Eos, but the original Roman dawn goddess may have continued to be worshipped under the cultic title Mater Matuta. The Anglo-Saxons worshipped the goddess Ēostre, who was associated with a festival in spring which later gave its name to a month, which gave its name to the Christian holiday of Easter in English. The name Ôstarmânôth in Old High German has been taken as an indication that a similar goddess was also worshipped in southern Germany. The Lithuanian dawn goddess Aušra was still acknowledged in the sixteenth century.
Sun and Moon
*Seh₂ul and *Meh₁not are reconstructed as the Proto-Indo-European goddess of the Sun and god of the Moon respectively. *Seh₂ul is reconstructed based on the Greek god Helios, the Roman god Sol, the Celtic goddess Sul/Suil, the North Germanic goddess Sól, the Continental Germanic goddess *Sowilō, the Hittite goddess "UTU-liya", the Zoroastrian Hvare-khshaeta and the Vedic god Surya. *Meh₁not- is reconstructed based on the Norse god Máni, the Slavic god Myesyats, and the Lithuanian god *Meno, or Mėnuo (Mėnulis). The daily course of *Seh₂ul across the sky on a horse-driven chariot is a common motif among Indo-European myths. While it is probably inherited, the motif certainly appeared after the introduction of the wheel in the Pontic-Caspian steppe about 3500 BC, and is therefore a late addition to Proto-Indo-European culture.
Although the sun was personified as an independent, female deity, the Proto-Indo-Europeans also visualized the sun as the "lamp of Dyēus" or the "eye of Dyēus", as seen in various reflexes: "the god’s lamp" in Medes by Euripides, "heaven’s candle" in Beowulf, or "the land of Hatti’s torch", as the Sun-goddess of Arinna is called in a Hittite prayer ; and Helios as the eye of Zeus, Hvare-khshaeta as the eye of Ahura Mazda, and the sun as "God's eye" in Romanian folklore. The names of Celtic sun goddesses like Sulis and Grian may also allude to this association: the words for "eye" and "sun" are switched in these languages, hence the name of the goddesses.
The Horse Twins are a set of twin brothers found throughout nearly every Indo-European pantheon who usually have a name that means 'horse', *h₁éḱwos, although the names are not always cognate, and no Proto-Indo-European name for them can be reconstructed.
In most traditions, the Horse Twins are brothers of the Sun Maiden or Dawn goddess, and the sons of the sky god, *Dyḗus Pḥₐtḗr. The Greek Dioscuri (Castor and Pollux) are the "sons of Zeus"; the Vedic Divó nápātā (Aśvins) are the "sons of Dyaús", the sky-god, the Lithuanian Dievo sūneliai (Ašvieniai) are the "sons of the God" (Dievas); and the Latvian Dieva dēli are likewise the "sons of the God" (Dievs).
Represented as young men and the steeds who pull the sun across the sky, the Divine Twins rode horses (sometimes they were depicted as horses themselves) and rescued men from mortal peril in battle or at sea. The Divine Twins are often differentiated: one is represented as a young warrior while the other is seen as a healer or concerned with domestic duties. In most tales where they appear, the Divine Twins rescue the Dawn from a watery peril, a theme that emerged from their role as the solar steeds. At night, the horses of the sun returned to the east in a golden boat, where they traversed the sea[d] to bring back the Sun each morning. During the day, they crossed the sky in pursuit of their consort, the morning star.
Other reflexes may be found in the Anglo-Saxon Hengist and Horsa (whose names mean "stallion" and "horse"), the Celtic "Dioskouroi" said by Timaeus to be venerated by Atlantic Celts as a set of horse twins, the Germanic Alcis, a pair of young male brothers worshipped by the Naharvali, or the Welsh Brân and Manawydan. The horse twins could have been based on the morning and evening star (the planet Venus) and they often have stories about them in which they "accompany" the Sun goddess, because of the close orbit of the planet Venus to the sun.
Some scholars have proposed a consort goddess named *Diwōnā or *Diuōneh₂, a spouse of Dyēus with a possible descendant in Zeus's consort Dione. A thematic echo occurs in Indra's wife Indrānī, and both deities display a jealous and quarrelsome disposition under provocation. A second descendant may be found in Dia, a mortal said to unite with Zeus in a Greek myth. The story leads ultimately to the birth of the Centaurs after the mating of Dia's husband Ixion with the phantom of Hera, the spouse of Zeus. The reconstruction is however only attested in those two traditions and therefore not secured. The Greek Hera, the Roman Juno, the Germanic Frigg and the Indic Sakti are often depicted as the protectress of marriage and fertility, or the bestowal of the gift of prophecy. James P. Mallory and Douglas Q. Adams note however that "these functions are much too generic to support the supposition of a distinct PIE 'consort goddess' and many of the 'consorts' probably represent assimilations of earlier goddesses who may have had nothing to do with marriage."
In the cosmological model proposed by Jean Haudry, deities of the diurnal sky could not transgress the night sky, inhabited by its own sets of gods and the spirits of the dead. Although the etymological association is often deemed untenable, some scholars have proposed *Uorunos as the nocturnal sky and benevolent counterpart of Dyēus, with possible cognates in Greek Uranos and Vedic Varuna, from the PIE root *uoru-, "to encompass, cover". *Uorunos may have personified the firmament, or dwelled in the night sky. In both Greek and Vedic poetry, Uranos and Varuna are portrayed as "wide-looking", bounding or seizing their victims, and having or being a heavenly "seat".
The substratum of Proto-Indo-European mythology is animistic. This native animism is still reflected in the Indo-European daughter cultures, In Norse mythology the Vættir are for instance reflexes of the native animistic nature spirits and deities. Trees have a central position in Indo-European daughter cultures, and are thought to be the abode of tree spirits.
In Indo-European tradition, the storm is deified as a highly active, assertive, and sometimes aggressive element; the fire and water are deified as cosmic elements that are also necessary for the functioning of the household; the deified earth is associated with fertility and growth on the one hand, and with death and the underworld on the other.
The earth goddess, *Dʰéǵʰōm, is portrayed as the vast and dark house of mortals, in contrast with Dyēus, the bright sky and seat of the immortal gods. She is associated with fertility and growth, but also with death as the final dwelling of the deceased. She was likely the consort of the sky father, *Dyḗus Pḥₐtḗr. The duality is associated with fertility, as the crop grows from her moist soil, nourished by the rain of Dyēus. The Earth is thus portrayed as the giver of good things: she is exhorted to become pregnant in an Old English prayer; and Slavic peasants described Zemlja, Mother Earth, as a prophetess that shall offer favourable harvest to the community. The unions of Zeus with Selene and Demeter is likewise associated with fertility and growth in Greek mythology. This pairing is further attested in the Vedic pairing of Dyáus Pitā and Prithvi Mater, the Greek pairing of Ouranos and Gaia, the Roman pairing of Jupiter and Tellus Mater from Macrobius's Saturnalia, and the Norse pairing of Odin and Jörð. Although Odin is not a reflex of *Dyḗus Pḥₐtḗr, his cult may have subsumed aspects of an earlier chief deity who was. The Earth and Heaven couple is however not at the origin of the other gods, as the Divine Twins and Hausos were probably conceived by Dyēus alone.
Cognates include Žemyna, a Lithuanian goddess celebrated as the bringer of flowers; Zemes Māte ("Mother Earth"), one of the goddesses of death in Latvian mythology; the Slavic Mati Syra Zemlya ("Mother Moist Earth"); and the chthonic deities of the underworld in Greek mythology. The possibilities of a Thracian goddess Zemelā (*gʰem-elā) and a Messapic goddess Damatura (*dʰǵʰem-māter), at the origin of the Greek Semele and Demeter respectively, are less secured. The commonest epithets attached to the Earth goddess are *Plethₐ-wih₁ (the "Broad One"), attested in the Vedic Pṛthvī, the Greek Plataia and Gaulish Litavis, and *Plethₐ-wih₁ Méhₐtēr ("Mother Broad One"), attested in the Vedic and Old English formulas Pṛthvī Mātā and Fīra Mōdor. Other frequent epithets include the "All-Bearing One", the one who bears all things or creatures, and the "mush-nourishing" or the "rich-pastured".
*Perkʷunos has been reconstructed as the Proto-Indo-European god of lightning and storms. It either meant "the Striker" or "the Lord of Oaks", and he was probably represented as holding a hammer or a similar weapon. Thunder and lightning had both a destructive and regenerative connotation: a lightning bolt can cleave a stone or a tree, but is often accompanied with fructifying rain. This likely explains the strong association between the thunder-god and oaks in some traditions. He is often portrayed in connection with stone and (wooden) mountains, probably because the mountainous forests were his realm. The striking of devils, demons or evildoers by Perkʷunos is a motif encountered in the myths surrounding the Lithuanian Perkūnas and the Vedic Parjanya, a possible cognate, but also in the Germanic Thor, a thematic echo of Perkʷunos.
The deities generally agreed to be cognates stemming from *Perkʷunos are confined to the European continent, and he could have been a motif developed later in Western Indo-European traditions. The evidence include the Norse goddess Fjǫrgyn (the mother of Thor), the Lithuanian god Perkūnas, the Slavic god Perúnú, and the Celtic Hercynian (Herkynío) mountains or forests. Perëndi, an Albanian thunder-god (from the root per-en-, "to strike", attached to -di, "sky", from *dyeus) is also a probable cognate. The evidence could extend to the Vedic tradition if we add the god of rain, thunder and lightning Parjánya, although Sanskrit sound laws rather predict a parkūn(y)a form.
From another root *(s)tenh₂ ("thunder") stems a group of cognates found in the Germanic, Celtic and Roman thunder-gods Thor, Taranis and (Jupiter) Tonans. According to Jackson, "they may have arisen as the result of fossilisation of an original epithet or epiclesis", as the Vedic Parjanya is also called stanayitnú- ("Thunderer"). The Roman god Mars may be a thematic echo of Perkʷunos, since he originally had thunderer characteristics.
Although the linguistic evidence is restricted to the Vedic and Balto-Slavic traditions, scholars have proposed that Proto-Indo-Europeans conceived the fire as a divine entity called *Hₓn̩gʷnis. "Seen from afar" and "untiring", the Indic deity Agni is pictured in the Rigveda as the god of both terrestrial and celestial fires. He embodied the flames of the sun and the lightning, as well as the forest fire, the domestic hearth fire and the sacrificial altar, linking heaven and earth in a ritual dimension. Another group of cognates deriving from the Balto-Slavic *ungnis ("fire") is also attested. Early modern sources report that Lithuanian priests worshipped a "holy Fire" named Ugnis (szwenta), which they tried to maintain in perpetual life, while Uguns (māte) was revered as the "Mother of Fire" by the Latvians. Tenth-century Persian sources give evidence of the veneration of fire among the Slavs, and later sources in Old Church Slavonic attest the worship of fire (ogonĭ), occurring under the divine name Svarožič, who has been interpreted as the son of Svarog. The name of an Albanian fire deity, *Enj- has been reconstructed from the Albanian name of Thursday, enj-të, attested in old texts also as egni- (also hegne-, igni-, en-gni-). This fire deity is thought to have been worshiped by the Illyrians in antiquity, among whom he was the most prominent god of the pantheon during Roman times. In other traditions, as the sacral name of the dangerous fire may have become a word taboo, the root served instead as an ordinary term for fire (Latin: ignis).
Scholars generally agree that the cult of the hearth dates back to Proto-Indo-European times. The domestic fire had to be tended with care and given offerings, and if one moved house, one carried fire from the old to the new home. The Avestan Ātar was the sacral and hearth fire, often personified and honoured as a god. In Albanian beliefs, Nëna e Vatrës ("the Hearth Mother") is the goddess protector of the domestic hearth (vatër). Herodotus reported a Scythian goddess of hearth named Tabiti, a term likely given under a slightly distorted guise, as she might represent a feminine participial form corresponding to an Indo-Iranian god named *Tapatī, "the Burning one". The sacral or domestic hearth can likewise be found in the Greek and Roman hearth goddesses Hestia and Vesta, two names that may derive from the PIE root *h₁u-es- ("burning"). Both the ritual fires set in the temples of Vesta and the domestic fires of ancient India were circular, rather than the square form reserved for public worship in India and for the other gods in Roman antiquity. Additionally, the custom that the bride circles the hearth three times is common to Indian, Ossetian, Slavic, Baltic, and German traditions.
It is probable that Proto-Indo-European beliefs featured some sorts of beautiful and sometimes dangerous water goddesses who seduced mortal men, akin to the Greek naiads, the nymphs of fresh waters. The Vedic Apsarás are said to frequent forest lakes, rivers, trees, and mountains. They are of outstanding beauty, and Indra sends them to lure men. In Ossetic mythology, the waters are ruled by Donbettyr ("Water-Peter"), who has daughters of extraordinary beauty and with golden hair. In the Armenian folklore, the Parik take the form of beautiful women who dance amid nature. The Slavonic water nymphs víly are also depicted as alluring maidens with long golden or green hair who like young men and can do harm if they feel offended. The Albanian mountain nymphs, Perit and Zana, are portrayed as beautiful but also dangerous creatures. Similar to the Baltic nymph-like Laumes, they have the habit of abducting children. The beautiful and long-haired Laumes also have sexual relations and short-lived marriages with men. The Breton Korrigans are irresistible creatures with golden hair wooing mortal men and causing them to perish for love. The Norse Huldra, Iranian Ahuraīnīs and Lycian Eliyãna can likewise be regarded as reflexes of the water nymphs.
A wide range of linguistic and cultural evidence attest the holy status of the terrestrial (potable) waters *āp-, venerated collectively as "the Waters" or divided into "Rivers and Springs". The cults of fountains and rivers, which may have preceded Proto-Indo-European beliefs by tens of thousands of years, was also prevalent in their tradition. Some authors have proposed *Neptonos or *H₂epom Nepōts as the Proto-Indo-European god of the waters. The name literally means "Grandson [or Nephew] of the Waters". Philologists reconstruct his name from that of the Vedic god Apám Nápát, the Roman god Neptūnus, and the Old Irish god Nechtain. Although such a god has been solidly reconstructed in Proto-Indo-Iranian religion, Mallory and Adams nonetheless still reject him as a Proto-Indo-European deity on linguistic grounds.
We find evidence for the deification of the wind in most Indo-European traditions. The root *h₂weh₁ ("to blow") is at the origin of the two words for the wind: *H₂weh₁-yú- and *H₂w(e)h₁-nt-. The deity is indeed often depicted as a couple. Vayu-Vāta is a dual divinity in the Avesta, Vāta being associated with the stormy winds and described as coming from everywhere ("from below, from above, from in front, from behind"). Similarly, the Vedic Vāyu, the lord of the winds, is connected in the Vedas with Indra—the king of the highest heaven—while the other deity Vāta represents a more violent sort of wind and is instead associated with Parjanya—the god of rain and thunder. Other cognates include Hitt. huwant-, Lith. vėjas, TochB yente, Lat. uentus, Ger. *windaz, or Welsh gwynt.
The association between the Greek god Pan and the Vedic god Pūshān was first identified in 1924 by German linguist Hermann Collitz. Both were worshipped as pastoral deities, which led scholars to reconstruct *Péh₂usōn ("Protector") as a pastoral god guarding roads and herds. He may have had an unfortunate appearance, a bushy beard and a keen sight. He was also closely affiliated with goats or bucks: Pan has goat's legs while goats are said to pull the car of Pūshān (the animal was also sacrificed to him on occasion). The minor discrepancies between the two deities could be explained by the possibility that many of Pan's original attributes were transferred over to his father Hermes.
The reflex may be at least of Graeco-Aryan origin. According to West, "Pūshān and Pan agree well enough in name and nature—especially when Hermes is seen as a hypostasis of Pan—to make it a reasonable conclusion that they are parallel reflexes of a prototypical god of ways and byways, a guide on the journey, a protector of flocks, a watcher of who and what goes where, one who can scamper up any slope with the ease of a goat."
In 1855, Adalbert Kuhn suggested that the Proto-Indo-Europeans may have believed in a set of helper deities, whom he reconstructed based on the Germanic elves and the Hindu ribhus. Although this proposal is often mentioned in academic writings, very few scholars actually accept it since the cognate relationship is linguistically difficult to justify. While stories of elves, satyrs, goblins and giants show recurrent traits in Indo-European traditions, West notes that "it is difficult to see so coherent an overall pattern as with the nymphs. It is unlikely that the Indo-Europeans had no concept of such creatures, but we cannot define with any sharpness of outline what their conceptions were." A wild god named *Rudlos has also been proposed, based on the Vedic Rudrá and the Old Russian Rŭglŭ. Problematic is whether the name derives from *reud- ("rend, tear apart"; akin to Lat. rullus, "rustic"), or rather from *reu- ("howl").
Although the name of the divinities are not cognates, a horse goddess portrayed as bearing twins and in connection with fertility and marriage has been proposed based on the Gaulish Epona, Irish Macha and Welsh Rhiannon, with other thematic echos in the Greek and Indic traditions. Demeter transformed herself into a mare when she was raped by Poseidon appearing as a stallion, and she gave birth to a daughter and a horse, Areion. Similarly, the Indic tradition tells of Saranyu fleeing from her husband Vivásvat when she assumed the form of a mare. Vivásvat metamorphosed into a stallion and of their intercourse were born the twin horses, the Aśvins. The Irish goddess Macha gave birth to twins, a mare and a boy, and the Welsh figure Rhiannon bore a child who was reared along with a horse.
A river goddess *Dehₐnu- has been proposed based on the Vedic goddess Dānu, the Irish goddess Danu, the Welsh goddess Don and the names of the rivers Danube, Don, Dnieper, and Dniester. Mallory and Adams however note that while the cognate network is probable, there is not evidence of an associated worship outside India. Some have also proposed the reconstruction of a sea god named *Trihₐtōn based on the Greek god Triton and the Old Irish word trïath, meaning "sea". Mallory and Adams also reject this reconstruction as having no basis, asserting that the "lexical correspondence is only just possible and with no evidence of a cognate sea god in Irish."
It is highly probable that the Proto-Indo-Europeans believed in three fate goddesses who spun the destinies of mankind. Although such fate goddesses are not directly attested in the Indo-Aryan tradition, the Atharvaveda does contain an allusion comparing fate to a warp. Furthermore, the three Fates appear in nearly every other Indo-European mythology. The earliest attested set of fate goddesses are the Gulses in Hittite mythology, who were said to preside over the individual destinies of human beings. They often appear in mythical narratives alongside the goddesses Papaya and Istustaya, who, in a ritual text for the foundation of a new temple, are described sitting holding mirrors and spindles, spinning the king's thread of life. In the Greek tradition, the Moirai ("Apportioners") are mentioned dispensing destiny in both the Iliad and the Odyssey, in which they are given the epithet Κλῶθες (Klothes, meaning "Spinners").
In Hesiod's Theogony, the Moirai are said to "give mortal men both good and ill" and their names are listed as Klotho ("Spinner"), Lachesis ("Apportioner"), and Atropos ("Inflexible"). In his Republic, Plato records that Klotho sings of the past, Lachesis of the present, and Atropos of the future. In Roman legend, the Parcae were three goddesses who presided over the births of children and whose names were Nona ("Ninth"), Decuma ("Tenth"), and Morta ("Death"). They too were said to spin destinies, although this may have been due to influence from Greek literature.
In the Old Norse Völuspá and Gylfaginning, the Norns are three cosmic goddesses of fate who are described sitting by the well of Urðr at the foot of the world tree Yggdrasil.[e] In Old Norse texts, the Norns are frequently conflated with Valkyries, who are sometimes also described as spinning. Old English texts, such as Rhyme Poem 70, and Guthlac 1350 f., reference Wyrd as a singular power that "weaves" destinies.
Later texts mention the Wyrds as a group, with Geoffrey Chaucer referring to them as "the Werdys that we clepyn Destiné" in The Legend of Good Women.[f] A goddess spinning appears in a bracteate from southwest Germany and a relief from Trier shows three mother goddesses, with two of them holding distaffs. Tenth-century German ecclesiastical writings denounce the popular belief in three sisters who determined the course of a man's life at his birth. An Old Irish hymn attests to seven goddesses who were believed to weave the thread of destiny, which demonstrates that these spinster fate-goddesses were present in Celtic mythology as well.
A Lithuanian folktale recorded in 1839 recounts that a man's fate is spun at his birth by seven goddesses known as the deivės valdytojos and used to hang a star in the sky; when he dies, his thread snaps and his star falls as a meteor. In Latvian folk songs, a goddess called the Láima is described as weaving a child's fate at its birth. Although she is usually only one goddess, the Láima sometimes appears as three. The three spinning fate goddesses appear in Slavic traditions in the forms of the Russian Rožanicy, the Czech Sudičky, the Bulgarian Narenčnice or Urisnice, the Polish Rodzanice, the Croatian Rodjenice, the Serbian Sudjenice, and the Slovene Rojenice. Albanian folk tales speak of the Fatit, three old women who appear three days after a child is born and determine its fate, using language reminiscent of spinning.
*Aryo-men has been reconstructed as a deity in charge of welfare and the community, connected to the building and maintenance of roads or pathways, but also with healing and the institution of marriage. It derives from the root *h₄erós (a "member of one’s own group", "one who belongs to the community", in contrast to an outsider), a word also at the origin of the Indo-Iranian *árya, "noble, hospitable", and the Celtic *aryo, "free man" (Old Irish: aire, "noble, chief"; Gaulish: arios, "free man, lord"). The Vedic god Aryaman is frequently mentioned in the Vedas, and associated with social and marital ties. In the Gāthās, the Iranian god Airyaman seems to denote the wider tribal network or alliance, and is invoked in a prayer against illness, magic, and evil. In the mythical stories of the founding of the Irish nation, the hero Éremón became the first king of the Milesians (the mythical name of the Irish) after he helped conquer the island from the Tuatha Dé Danann. He also provided wives to the Cruithnig (the mythical Celtic Britons or Picts), a reflex of the marital functions of *Aryo-men. The Gaulish given name Ariomanus (maybe "lord-spirited"), generally borne by Germanic chiefs, is also to be mentioned.
Although the name of a particular Proto-Indo-European smith god cannot be linguistically reconstructed, it is highly probable that the Proto-Indo-Europeans had a smith deity of some kind, since smith gods occur in nearly every Indo-European culture, with examples including the Hittite Hasammili, the Vedic Tvastr, the Greek Hephaestus, the Germanic Wayland the Smith, the Irish Goibniu, the Lithuanian Telyavelik and the Ossetian Kurdalagon and the Slavic Svarog. Mallory notes that "deities specifically concerned with particular craft specializations may be expected in any ideological system whose people have achieved an appropriate level of social complexity". Nonetheless, two motifs recurs frequently in Indo-European traditions: the making of the chief god's distinctive weapon (Indra’s and Zeus’ bolt; Lugh’s spear) by a special artificer, and the craftsman god’s association with the immortals’ drinking. Smith mythical figures share other characteristics in common. Hephaestus, the Greek god of blacksmiths, and Wayland the Smith, a nefarious blacksmith from Germanic mythology, are both described as lame. Additionally, Wayland the Smith and the Greek mythical inventor Daedalus both escape imprisonment on an island by fashioning sets of mechanical wings from feathers and wax and using them to fly away.
The Proto-Indo-Europeans may also have had a goddess who presided over the trifunctional organization of society. Various epithets of the Iranian goddess Anahita and the Roman goddess Juno provide sufficient evidence to solidly attest that she was probably worshipped, but no specific name for her can be lexically reconstructed. Vague remnants of this goddess may also be preserved in the Greek goddess Athena. A decay goddess has also been proposed on the basis of the Vedic Nirṛti and the Roman Lūa Mater.
Michael Estell has reconstructed a mythical craftsman named *H₃rbʰeu based on the Greek Orpheus and the Vedic Ribhus. Both are the son of a cudgel-bearer or an archer, and both are known as "fashioners" (*tetḱ-). A mythical hero named *Promāth₂eu has been also been proposed, based on the Greek Prometheus ("the one who steals"), who took the heavenly fire away from the gods to bring it to mankind, and the Vedic Mātariśvan, the mythical bird who "robbed" (Sanskrit: mathnati; occasionally found as pra math-, "to steal") the hidden fire and gave it to the Bhrigus.
Some scholars have proposed a war god *Māwort- based on the Roman god Mars and the Vedic Marutás, companions of the war-god Indra. Mallory and Adams, however, reject this reconstruction on linguistic grounds. Likewise, some researchers have found it more plausible that Mars was originally a storm deity, while this cannot be said for Ares.
One common myth found in nearly all Indo-European mythologies is a battle ending with a hero or god slaying a serpent or dragon of some sort. Although the details of the story often vary widely, several features remain remarkably the same in all iterations. The protagonist of the story is usually a thunder-god, or a hero who is somehow associated with thunder. His enemy the serpent is frequently associated with water and is depicted as multi-headed, or else "multiple" in some other way. The creature is described as a "blocker of waters" and his heads get eventually smashed up by the thunder-god, releasing torrents of water that had previously been pent up. The myth may have symbolized a clash between forces of order and chaos. The dragon or serpent loses in every version of the story, although in some mythologies, such as the Norse Ragnarök myth, the hero or the god dies with his enemy during the epic battle. Bruce Lincoln has proposed that the tale of the dragon-slaying and the creation myth of *Trito killing the serpent *Ngʷhi may actually belong to the same story.
Reflexes of the Proto-Indo-European dragon-slaying myth appear in most Indo-European poetic traditions, where the myth has left traces of the formulaic sentence *(h₁e) gʷʰent h₁ógʷʰim ("[he] slew the serpent"). In Hittite mythology, the storm god Tarhunt slays the giant serpent Illuyanka. In the Rigveda, the god Indra slays the multi-headed serpent Vritra, which had been causing a drought by trapping the waters in his mountain lair. Several variations of the story are also found in Greek mythology as well. The story is attested in the legend of Zeus slaying the hundred-headed Typhon from Hesiod's Theogony, but it is also in the myths of the slaying of the nine-headed Lernaean Hydra by Heracles and the slaying of Python by Apollo. The story of Heracles's theft of the cattle of Geryon is probably also related. Although Heracles is not usually thought of as a storm deity in the conventional sense, he bears many attributes held by other Indo-European storm deities, including physical strength and a knack for violence and gluttony.
The original Proto-Indo-European myth is also reflected in Germanic mythology. In Norse mythology, Thor, the god of thunder, slays the giant serpent Jörmungandr, which lived in the waters surrounding the realm of Midgard. Other dragon-slaying myths are also found in the Germanic tradition: in the Völsunga saga, Sigurd slays the dragon Fafnir and, in Beowulf, the eponymous hero slays a different dragon. The depiction of dragons hoarding a treasure (symbolizing the wealth of the community) in Germanic legends may be a reflex of the original myth of the serpent holding waters.
In Zoroastrianism and Persian mythology, Fereydun, and later Garshasp, slays the serpent Zahhak. In Slavic mythology, Perun, the god of storms, slays his enemy the dragon-god Veles, and the bogatyr hero Dobrynya Nikitich slays the three-headed dragon Zmey. In Albanian mythology, the drangue, semi-human divine figures associated with thunders, slay the kulshedra, huge multi-headed fire-spitting serpents associated with water and storms. In Armenian mythology, the god of thunders Vahagn slays the dragon Vishap, and the knight hero Făt-Frumos slays the fire-spitting monster Zmeu in Romanian folklore. The god of healing Dian Cecht also slays Meichi in Celtic mythology.
Fire in water
Another reconstructed myth is the story of the fire in the waters. It depicts a fiery divine being named *H₂epom Nepōts who dwells in waters and can only be approached by someone especially designated for the task.
In the Rigveda, the god Apám Nápát is envisioned as a form of fire residing in the waters. In Celtic mythology, a well belonging to the god Nechtain is said to blind all those who gaze into it. In an old Armenian poem, a small reed in the middle of the sea spontaneously catches fire and the hero Vahagn springs forth from it with fiery hair and a fiery beard and eyes that blaze as suns. In a ninth-century Norwegian poem by the poet Thiodolf, the name sǣvar niþr, meaning "grandson of the sea," is used as a kenning for fire. Even the Greek tradition contains possible allusions to the myth of a fire-god dwelling deep beneath the sea. The phrase "νέποδες καλῆς Ἁλοσύδνης," meaning "descendants of the beautiful seas," is used in The Odyssey 4.404 as an epithet for the seals of Proteus.
In general the union of complementary principles, like in this case the union of fire and water, appears to be a fundamental and repeating pattern in Proto-Indo-European mythology. Other examples include the hermaphrodite, twin or two-fold primeval being from that the world tree emerges, the marriage (union) of the Sky Father with the Earth Mother, the Dawn goddess that is the personified union of night and day and in general the often complementary character of the triads.
Binding of evil
Jaan Puhvel notes similarities between the Norse myth in which the god Týr inserts his hand into the wolf Fenrir's mouth while the other gods bind him with Gleipnir, only for Fenrir to bite off Týr's hand when he discovers he cannot break his bindings, and the Iranian myth in which Jamshid rescues his brother's corpse from Ahriman's bowels by reaching his hand up Ahriman's anus and pulling out his brother's corpse, only for his hand to become infected with leprosy. In both accounts, an authority figure forces the evil entity into submission by inserting his hand into the being's orifice (in Fenrir's case the mouth, in Ahriman's the anus) and losing it. Fenrir and Ahriman fulfill different roles in their own mythological traditions and are unlikely to be remnants of a Proto-Indo-European "evil god"; nonetheless, it is clear that the "binding myth" is of Proto-Indo-European origin.
Indo-Europeans religion was centered on sacrificial rites of cattle and horses, probably administered by a class of priests or shamans. Animals were slaughtered (*gʷʰn̥tós) and dedicated to the gods (*deywṓs) in the hope of winning their favor. The Khvalynsk culture, associated with the archaic Proto-Indo-European language, had already shown archeological evidence for the sacrifice of domesticated animals.
The king as the high priest would have been the central figure in establishing favourable relations with the other world. Georges Dumézil suggested that the religious function was represented by a duality, one reflecting the magico-religious nature of priesthood, while the other is involved in religious sanction to human society (especially contracts), a theory supported by common features in Iranian, Roman, Scandinavian and Celtic traditions.
The reconstructed cosmology of the proto-Indo-Europeans shows that ritual sacrifice of cattle, the cow in particular, was at the root of their beliefs, as the primordial condition of the world order. The myth of *Trito, the first warrior, involves the liberation of cattle stolen by a three-headed entity named *Ngwhi. After recovering the wealth of the people, Trito eventually offers the cattle to the priest in order to ensure the continuity of the cycle of giving between gods and humans. The creation myth could have rationalised raiding as the recovery of cattle that the gods had intended for the people who sacrificed properly. Many Indo-European cultures preserved the tradition of cattle raiding, which they often associated with epic myths. Proto-Indo-Europeans also had a sacred tradition of horse sacrifice for the renewal of kinship involving the ritual mating of a queen or king with a horse, which was then sacrificed and cut up for distribution to the other participants in the ritual. Jaan Puhvel has compared the Gaulish God Epomeduos (the "master of horses") with the Vedic name of the horse sacrifice, aśvamedhá. The word for "oath", *h₁óitos, derives from the verb *h₁ei- ("to go"), after the practice of walking between slaughtered animals as part of taking an oath.
- Interpretatio graeca, the comparison of Greek deities to Germanic, Roman, and Celtic deities
- Neolithic religion
- Proto-Indo-European society
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- In order to present a consistent notation, the reconstructed forms used here are cited from Mallory & Adams 2006. For further explanation of the laryngeals – <h₁>, <h₂>, and <h₃> – see the Laryngeal theory article.
- "Classic" is defined by David W. Anthony as the proto-language spoken after the Anatolian split, and "Archaic" as the common ancestor of all Indo-European languages.
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