Ruarc | Art | Sean Ferghal | Aedh | Art Uallach | Niall | Ualgharg 
| Teghernan O'Rourke | |------------------------------------ | | Domhnall 
McTernans of Tullyhunco, Co Cavan, Teallach Dhonnchadh | | Ferghal | Domhnall 
| Art | Amhlaibh | Domhnall | Ualgharg | Tiernan Mor | Tadhg | Tiernan 
Og | Owen | Brian Ballach Mor | |-------------------------------------| | 
| Tiernan Ban Sir Brian na Murtha | | Brian Ballach Og Mary = Sir Hugh 
| | O'Conor Don --------------------------------- | | | | Hugh Tiernan 
Cathal O Conor | | | Denis | Charles Og O Conor | | | Hugh Mary -------- = -------- 
Denis O Conor | | Hugh Roe Charles O Conor | | | ---------------- | | | Hycinth 
Denis O Conor Bridget = Myles | | O Conor MacDermot Arabella = Charles Bess O 
Conora = 3rd Prince Joseph MacDermot Dr. Hugh MacDermot 5th Prince 4th Prince