Ailill Aulom

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Ailill Aulom (also called Oilill Olum) was a legendary king in the southern half of Ireland in the 3rd century. He was the son of Mug Nuadat. He married Sadb ingen Chuinn, the daughter of Conn of the Hundred Battles, in her second marriage. Ailill divided his kingdom among his three sons: Éogan Mór, Cormac Cas, and Cían; Éogan started the Eóganachta dynasty. Sadb’s son Lugaid Mac Con, who was Ailill’s foster-son, later became High King of Ireland. The Book of Leinster includes poems attributed to Lugaid. Many Irish families claim descent from Ailill Ollamh, and the Book of Munster gives a detailed history of the Eóganacht septs. In some early writings, Ailill is described as a druid. He is usually thought to be related to or descended from Nia Segamain, and he is often linked to Mug Nuadat’s association with the god Nuada.