Murchad mac Diarmata

Murchad mac Diarmata (English: Murrough MacDermot) (died 1070) was a late eleventh-century ruler of the kingdoms of Leinster, Dublin, and the Isles.

He was a member of the Uí Chennselaig, and a son of Diarmait mac Máel na mBó, King of Leinster (died 1072).

Murchad led an army into the Kingdom of Meath in July 1069 "where he burned territories and churches", he was however badly wounded by Feichin, a defender.

There is grief for a chief king at Ath Cliath, Which will not be exceeded till the terrible Judgment Day; Empty is the fortress without the descendant of Duach, Quickly was the vigour of its heroes cut down.

Sorrowful every party in the fortress For their chief, against whom no army prevailed; Since the body of the king was hidden from all, Every evil has showered ever constant.