Gaelic nobility of Ireland
This article concerns the Gaelic nobility of Ireland from ancient to modern times. It only partly overlaps with Chiefs of the Name because it excludes Scotland and other discussion. It is one of three groups of Irish nobility, the others being those nobles descended from the Hiberno-Normans and those granted titles of nobility in the Peerage of Ireland.
By the time of the Treaty of Limerick, almost all Gaelic nobles had lost any semblance of real power in their (former) domains. Today, such historical titles have no special legal status in the Republic of Ireland, unlike in Northern Ireland, which has remained a part of the United Kingdom of Great Britain and Northern Ireland. The Republic of Ireland does not confer titles of nobility under its constitution.
From 1943 until 2003 some of the modern representatives of the Gaelic nobility obtained a courtesy recognition as Chiefs of the Name from the Irish government. The practice ended in 2003 following certain scandals (Terence Francis MacCarthy) and under concerns that it was unconstitutional. Disputed titles, as well as those for whom recognition is still pending, are not listed.
Clann territories were under the rule and control of a Chief, who was elected by a vote of descendants (within three generations) of the preceding Chief. The designation as Chief was also referred to as a King (Ri), Lord (Tiarna), or Captain of his countries, all of which were roughly equivalent prior to the collapse of the Gaelic order. The concept of a hereditary "title" originated with the adoption of English law, the policy of surrender and regrant and the collapse of the Gaelic order during the period from approximately 1585–1610. Because the election of a new chief would almost always be from the same family (or families) within a tribal area, each family developed a long history of ruling within an area, which gave rise to the concept of Gaelic nobility. However, ruling titles did not pass by hereditary descent; rather it was by election and bloodshed, given the absence of criminal penalties for the death of an opponent.
All below are flatha (princes) and also descendants in the male line, however distant in some cases, from at least one historical grade of Rí, a Rí túaithe (usually a local petty king), a Ruiri (overking or regional king), or a greater Rí ruirech (king of overkings, also called a provincial king or Rí cóicid). A number of rí ruirech also became Ard Rí and their surviving princely descendants remain claimants to the long vacant, so-called High Kingship. A modern Gaelic noble may be styled a self-proclaimed flaith (prince) or tiarna (lord, count/earl). See also White Rod.
The ancient Gaelic families are divided by race and sept, and by geography.
- Uí Briúin
- Uí Néill
- Southern Uí Néill
- Uí Maine
- Dál gCais
- Dál Fiatach
- Eóganacht Chaisil
- Uí Fidgenti
- Corcu Duibne
- Norse Gaelic origins
- The King of Dublin
Other O'Neills did not apply for recognition. The most notable of these is the Prince of the Fews, Don Carlos O'Neill, 12th Marquis of Granja. There is currently a dispute between him and the Prince of Clanaboy (above) over who is the "senior," with the matter appearing unresolvable. However most recently O'Neill of Clanaboy may have gotten the upper hand in the dispute.
The O'Neills of the Fews are a 15th-century branch of the Tyrone or Ó Néill Mór line whereas the O'Neills of Clanaboy are a High Medieval line. Hence the matter is academic, both being somewhat distant from the last sovereigns of Tyrone in Ulster (to 1607), whose plentiful descendants eventually fell into comparative obscurity. Today they are known as the McShane-O'Neills, or the anglicized version- Johnson.
The chosen and recognised heir apparent of the Chief of the Name, Fr. Hugh O'Donel, O.F.M., is Don Hugo O'Donnell, 7th Duke of Tetuan. Other members of the family have disputed this, most notably Fr. Hugh's sister, Nuala Ní Dhomhnaill, who has even on television and radio disputed the exclusion from the succession process of potential female and female line claimants, but the head of the genealogically-senior line has been firm in his choice of his distant cousin the Duke of Tetuan.
Other Gaelic nobles
The most recent illegitimate claimants to the royal title of MacCarthy Mór (Prince of Desmond) are two close relatives, Barry Trant MacCarthy (Mór), now elderly (born 1931), and the younger Liam Trant MacCarthy (Mór) (born 1957). They allege to be descendants of Cormac of Dunguil, younger son of Tadhg na Mainistreach Mac Carthaigh Mór, King of Desmond (died 1426), they claim to belong to the Srugrena sept, but this is a debunked falsehood. 
There remain other Gaelic nobles who are not of the "senior" lines, but whose descent is recognised in Europe and a number of whom also hold Continental titles.
- The Count O'Donnell of Austria (O'Donell von Tyrconnell)
- The Count O'Rourke of Russia
- O'Nelly, The Count O'Nelly of Austria, Commander of the 72nd Bohemian Regiment
- O'Donovan family
- Dál gCais
- Baron Lisle (Lysaght)
- O'Neill dynasty
- O'Connell family
- Irish nobility which distinguishes three groups of Irish nobility of which this article treats of one such group.
- Kingdoms of Ireland
- Irish genealogy
- Irish kings
- Petty kingdom
- Immemorial nobility
- Incorporeal hereditament
- Hereditary title
- Substantive title
- British nobility
- The Irish Constitution Archived 16 May 2010 at the Wayback Machine
- Curley, pp. 179–80; Charles Lysaght (in Curley), p. 14
- Curley, pp. 26–7, and following profiles; see also Jaski, pp. 37–40, 89, 99–102; Byrne, pp. 41–2, for academic discussion on the types of rí
- The current O'Conor Don has dropped the style The O'Conor Don, Prince of Connacht used by his father, considering O'Conor Don to be "historically grand enough by itself". Curley, p. 155
- The MacMorrough Kavanagh Archived 19 January 2012 at the Wayback Machine
- John O'Hart, Irish Pedigrees; or, The Origin and Stem of the Irish Nation, 5th edition, in two volumes, originally published in Dublin in 1892, reprinted, Baltimore: Genealogical Publishing Company, 1976, Vol. 1, pp. 417-418 and 426-428, One of the most ancient of Gaelic Ireland’s royal lines, the MacDonlevy are often neglected from the recounting of its nobility. They have been obscured to history for two reasons. First, the dynasty’s final patronage of Ulaid fell to the forces of Henry Plantagenet in 1177 centuries before the English implemented the policy of Surrender and regrant, and, so, the MacDonlevy are not represented in the more modern English or Irish peerage, except by a few obscure instances of intermarriage. Second, staunch Roman Catholics and Jacobites, the MacDonlevy line of Captain of his Nation died out in Continental exile with the Stuarts in Paris in the late 19th century decades before the formation of the Republic of Ireland and a half century before the Republic’s brief period of courtesy recognition of these princely titles. As Irish nobles, the MacDonlevy were solely nobles of Gaelic Ireland.
- Dictionary of National Biography, Vol. 35 MacCarwell - Maltby (Sidney Lee Ed.). (1893) New York: MacMillan & Co., p. 52, "As the family originally came from Ulidia, the lesser Uladh, or Ulster, the members of the family are often called in Irish writings, instead of MacDonlevy, Ultach, that is, Ulsterman, and from this the name of MacNulty, Mac an Ultaigh, son of the Ulsterman, is derived."
- Cadet branch of O'Sullivan Mor. See Ellis, p. 157; Curley, p. 116
- Considered by many to now be the O'Donoghue Mor and thus Prince of Locha Léin, but has not yet claimed the title. See Ellis, pp. 137–8, noting "the family has no such intention". But compare Curley, pp. 109–12, who styles O'Donoghue the Prince of Locha Léin anyway, because the senior dynasty have of course gone extinct.
- For the genealogy of the O'Donovans see Donnubán mac Cathail.
- The Clann Somhairle, although claiming Irish ancestry, are also considered a "cadet branch" (maternal line) of the Crovan dynasty, Kings of Mann and the Isles, likely a branch of the Norse-Irish Uí Ímair. See Alex Woolf, The origins and ancestry of Somerled: Gofraid mac Fergusa and 'The Annals of the Four Masters', Medieval Scandinavia 15 (2005)
- Ellis, pp. 231 ff
- Curley, p. 43
- Curley, p. 61
- Curley, pp. 59–62
- Burke, Bernard and Hugh Montgomery-Massingberd, Burke's Irish Family Records. London: Burke's Peerage Ltd. 5th edition, 1976.
- Chambers, Anne, At Arm's Length: Aristocrats in the Republic of Ireland. New Island Books. 2nd revised edition, 2005. (selected families, Gaelic, Hiberno-Norman, and later)
- Curley, Walter J.P., Vanishing Kingdoms: The Irish Chiefs and their Families. Dublin: Lilliput Press. 2004. Foreword by Charles Lysaght.
- Debrett's 
- Ellis, Peter Berresford, Erin's Blood Royal: The Gaelic Noble Dynasties of Ireland. Palgrave. Revised edition, 2002.
- MacLysaght, Edward, Irish Families: Their Names, Arms and Origins. Irish Academic Press. 4th edition, 1998.
- Murphy, Sean J., Twilight of the Chiefs: The Mac Carthy Mór Hoax. Bethesda, Maryland: Academica Press. 2004.
- Nash, Catherine, Of Irish Descent, chapter 4. New York: Syracuse University Press. 2008. ISBN 978-0-8156-3159-0
Genealogical and historical
- Cú Choigcríche Ó Cléirigh, The O'Clery Book of Genealogies. early-mid 17th century.
- Cotter, G. de P. (ed.), "The Cotter Family of Rockforest, Co. Cork", in Journal of the Cork Historical and Archaeological Society 43 (1938): 21–31
- Cronnelly, Richard F., Irish Family History. Dublin. 1864.
- D'Alton, John, Illustrations, Historical and Genealogical, of King James's Irish Army List, 1689 2 vols. London: J.R. Smith. 2nd edition, 1861.
- Keating, Geoffrey, with David Comyn and Patrick S. Dinneen (trans.), The History of Ireland by Geoffrey Keating. 4 Vols. London: David Nutt for the Irish Texts Society. 1902–14.
- Meyer, Kuno (ed.), "The Laud Genealogies and Tribal Histories", in Zeitschrift für Celtische Philologie 8. Halle/Saale, Max Niemeyer. 1912. Pages 291–338.
- O'Connor, Roderic, A Historical and Genealogical Memoir of the O'Connors, Kings of Connaught, and their Descendants. Dublin: McGlashan & Gill. 1861.
- Ó Corráin, Donnchadh (ed.), Genealogies from Rawlinson B 502 University College, Cork: Corpus of Electronic Texts. 1997.
- O'Donoghue, John, Historical Memoir of the O'Briens. Dublin: Hodges, Smith, & Co. 1860.
- Annals of the Four Masters, ed. & tr. John O'Donovan (1856). Annála Rioghachta Éireann. Annals of the Kingdom of Ireland by the Four Masters... with a Translation and Copious Notes. 7 vols (2nd ed.). Dublin: Royal Irish Academy. CELT editions. Full scans at Internet Archive: Vol. 1; Vol. 2; Vol. 3; Vol. 4; Vol. 5; Vol. 6; Indices.
- O'Donovan, John and the Rt. Hon. Charles Owen O'Conor Don, The O'Conors of Connaught: An Historical Memoir. Dublin: Hodges, Figgis, and Co. 1891.
- O'Hart, John, Irish Pedigrees. Dublin. 5th edition, 1892.
- Todd, James Henthorn (ed. & tr.), Cogadh Gaedhel re Gallaibh: The War of the Gaedhil with the Gaill. London: Longmans. 1867.
Irish kingship and lordship
- Bhreathnach, Edel (ed.), The Kingship and Landscape of Tara. Four Courts Press for The Discovery Programme. 2005.
- Byrne, Francis J., Irish Kings and High-Kings. Four Courts Press. 2nd edition, 2001.
- Charles-Edwards, T.M., Early Christian Ireland. Cambridge. 2000.
- Dillon, Myles, "The consecration of Irish kings", in Celtica 10 (1973): 1–8.
- Dillon, Myles, The Cycles of the Kings. Oxford. 1946.
- FitzPatrick, Elizabeth, Royal Inauguration in Gaelic Ireland c. 1100–1600: A Cultural Landscape Study. Boydell Press. 2004.
- Jaski, Bart, Early Irish Kingship and Succession. Four Courts Press. 2000.
- Nicholls, K. W., Gaelic and Gaelicized Ireland in the Middle Ages. Dublin: Lilliput Press. 2nd edition, 2003.
- O'Donovan, John (ed.), and Duald Mac Firbis, The Genealogies, Tribes, and Customs of Hy-Fiachrach. Dublin: Irish Archaeological Society. 1844. pp. 425–452
- Duffy, Seán (ed.), Medieval Ireland: An Encyclopedia. Routledge. 2005.
- Mac Niocaill, Gearóid, Ireland before the Vikings. Dublin: Gill and Macmillan. 1972.
- Ó Corráin, Donnchadh, Ireland before the Normans. Dublin: Gill and Macmillan. 1972.
- O'Rahilly, Thomas F., Early Irish History and Mythology. Dublin Institute for Advanced Studies. 1946.