Nielsen Hayden genealogy
Descendants of Failbe mac Domnaill
Father: Domnall mac Cormaic
Failbe mac Domnaill
   └─ Mugain ingen FaĆlbe
    Cellach Cualann mac Gerthide, King of Laigin ( - 715)
       ├─ Conchenn ingen Cellaig Cualain ( - 743)
       │ Murchad mac Brain Muit, King of Laigin ( - 727 Leinster, Ireland)
       │    └─ Muiredach mac Murchada, King of Laigin ( - 760) =>
       │     +
       └─ St. Caintigern ( - 734 Loch Lomond, Argyllshire, Scotland)