Dermot mac Tadhg Mor

Dermot mac Tadhg Mor, 7th king of Moylurg, reigned from 1124 to 1159. Vassal and kinsman of the O Conchobhair Kings of Connacht. Dermot was the progenitor of the MacDermot family, as well as its offshoot septs such as MacDermot Roe, McDonagh, and Crowley (surname).