Tamayori-hime is the daughter of the sea-dragon god, Watatsumi (綿津見) and also Toyotama-hime (豊玉姫)'s younger sister. Her name appears in Tenson kōrin (天孫降臨) and Ugayafukiaezu (鵜草葺不合命) section. Her elder sister sent her to raise her son, Ugayafukiaezu, a son of Hoori (火遠理命) upon her abandonment of them. And after, Tamayori-hime married Ugayafukiaezu and Itsuse (五瀬命), Inahi (稲飯命), Mikenu (御毛沼命), Wakamikenu (若御毛沼命; Emperor Jimmu) were born.
Tamayori means Yorishiro, an object to embody Gods. Tamayori-hime is a woman Yorishiro, Miko.