Diarmait mac Mail, King of Leinster and Ireland (see here),
Dermot MacMurrough, King of Leinster (see here).
He mar Mor O'Toole.
He abducted Dervorgila, the wife of O'Rourke of Breffni in 1152. Not unwillingly for they were lovers. Known as the "Rape of Dervorgila".
He was deposed.
He went to England to seek help from Henry II, thus inviting the Anglo-Norman invasion of Ireland.
The Anglo-Normans invaded 1169, led by Strongbow and Maurice Fitzgerald de Windsor.
Dermot held Dunamase fort, Co.Laois.
He died 1171, bur in Ferns Cathedral, Co.Wexford.
He had issue [by Mor O'Toole]:
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