Nielsen Hayden genealogy
Ancestors of Diarmait mac Mael na mBó, King of Leinster and High King of Ireland
- 1072 ┌── Domnall mac Cellaig, King of the Ui Chennselaig ( - 974) =>
┌── Diarmat mac Domnaill, King of the Ui Cheinnselaig ( - 996)
┌── Donnchad Máel na mBó, King Of The Ui Cheinnselaig ( - 1006)
│ ┌── Gilla Pátraic (of Osraige, Ireland - ??)