CU
Cacht Ua Mordha
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About
Cacht ingen Loigsig of the Ua Mordha - the O'Mores of Laois - married Muirchertach O'Toole, King of the Ui Muiredaig, and became the mother of a queen and the kinswoman of a saint: her daughter Mor was Diarmait MacMurchada's queen and Aoife's mother, and her stepson Laurence O'Toole became Ireland's canonised archbishop. Few grandmothers stand nearer the hinge of Irish history.
Research notes
✓ CACHT ingen LOIGSIG UA MORDHA (O'More of Laois); wife of Muirchertach O'Toole; mother of Mor (our line). Standard well-documented medieval genealogy per the cited authorities (web-confirmed 7 Aug 2026); contested rungs note-only, not hardened.