Donnchadh mac Urchadh
Encyclopedia
Biography
Nothing certain seems to be known of Donnchadh, though he would have been an uncle of Brian BoruBrian Boru
Brian Bóruma mac Cennétig, , , was an Irish king who ended the domination of the High Kingship of Ireland by the Uí Néill. Building on the achievements of his father, Cennétig mac Lorcain, and especially his elder brother, Mathgamain, Brian first made himself King of Munster, then subjugated...
. He is not listed in the genealogies.