MU
Muirchertach Ua Tuathail
d. 1164
Vitals
Died
1164
Family
Spouse
Children
About
Muirchertach O'Toole was king of the Ui Muiredaig in north Leinster, father of Mor the queen and of Saint Laurence O'Toole, Archbishop of Dublin; a Gaelic king whose children touched sanctity and sovereignty both.
Research notes
✓ MUIRCHERTACH UA TUATHAIL, King of UI MUIREDAIG (d.1164), of the Ui Dunlainge dynasty of Leinster; m. Cacht ingen Loigsig Ua Mordha; father of MOR (our line) and of ST LAURENCE O'TOOLE. Standard well-documented medieval genealogy per the cited authorities (web-confirmed 7 Aug 2026); contested rungs note-only, not hardened.