Fíatach Finn
Fiatach Finn mac Dáire, a distant descendant of Óengus Tuirmech Temrach, was, according to medieval Irish legend and historical tradition, a king of the Ulaid, later a High King of Ireland, and the eponymous ancestor of the early Medieval Ulster dynasty of the Dál Fiatach. He was king of the Ulaid while Feradach Finnfechtnach was High King, and succeeded to the High Kingship himself when Feradach died.