the Four Masters, which claims that his death was at the hands of de Lacy and Domhnall states that he was 'a man of great power for a long time'. Prior to his departure, Henry, in his capacity as Lord of Ireland, granted the Lordship of Meath to de Lacy in 1172. Family Via his mother, Ua Ruairc was a half-brother of Donnchad Ua Cerbaill (d. 1168). Ua Ruairc had at least three children, a son Maelseachlainn Ua Ruairc, who was killed in 1162, a son Aodh Ua Ruairc, who was killed attacking Dublin, and a daughter Dubhchoblaigh, who was married to Ruaidhrí Ua Conchobair. See also Irish nobility Irish royal families Kingdom of Breifne Kingdom of Mide Notes 1172 deaths People from County Leitrim People from County Cavan 12th-century Irish monarchs Murdered royalty Assassinated Irish politicians Year of birth unknown Ancient Irish dynasties