Tuatha Dé Danann
In the First Battle of Magh Tuiredh, King Nuada of the Tuatha Dé Danann lost his hand; because he was imperfect, he could not be king. Hoping to reconcile relations between the Fomorians and the Tuatha Dé Danann, Bres was named king and Brigid of the Tuatha de Danann married him, giving him a son, Ruadan, who would later be killed trying to assassinate Goibniu.