Nielsen Hayden genealogy
Descendants of Failend ingen Suibne
Father: Suibne mac Commáin
Failend ingen Suibne
Crundmáel Erbuilc mac Rónáin, King of Laigin ( - 656 of Uí Chennselaig)
   └─ Ethne ingen Crundmael
    Failbe mac Domnaill
       └─ Mugain ingen Faílbe
        Cellach Cualann mac Gerthide, King of Laigin ( - 715)
           │ + Murchad mac Brain Muit, King of Laigin ( - 727 Leinster, Ireland)
           └─ St. Caintigern ( - 734 Loch Lomond, Argyllshire, Scotland)