The Kings of Magh Luirg or Moylurg were a branch of the Síol Muireadaigh, and a kindred family to the Ua Conchobair Kings of Connacht. Their ancestor, Maelruanaidh Mor mac Tadg, was a brother to Conchobar mac Tadg, King of Connacht 967–973, ancestor of the O Connor family of Connacht. Maelruanaidh Mor mac Tadg is said to have made a deal of some nature where, in return for abandoning any claim to the provincial kingship, he would be given Moylurg. His dynasty was known as the Clan Mulrooney, and later still took the surname of MacDermot (a branch of this family were in turn called MacDermot Roe). The following is a list of their Kings, followed by the respective heads of the family up to the present day.

The Kings of Moylurg

The MacDermot of the Carrick

The Chief of the Name

The Prince of Coolavin

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See also