Tuatha de DanannyoudaoicibaDictYouDict[Tuatha de Danann 词源字典]
1680s, from Irish Tuatha dé Danann, literally "the people of Danann," from plural of tuath (see Teutonic) + Danann, apparently originally an oblique case of Danu, mother of the gods.[Tuatha de Danann etymology, Tuatha de Danann origin, 英语词源]