Mór Ní Thuathail
| Mór Ní Thuathail | |
|---|---|
| Queen consort of Leinster | |
| Tenure | c. 1140 – 1 May 1171 |
| Born | c. 1114 Castledermot, County Kildare, Ireland |
| Died | 1191 Ireland |
| Spouse | Diarmait Mac Murchada, King of Leinster |
| Issue | Conchobhar MacMurrough Aoife of Leinster Orlachan of Leinster |
| House | O'Toole Mac Murchada |
| Father | Muitchertach Ua Tuathail |
| Mother | Cacht Ní Morda |
Mór Ní Thuathail (anglicised as Mor O'Toole; c. 1114 – 1191) was a Queen-consort of Leinster as the principal first wife of King Diarmait Mac Murchada. Under Brehon Law, Irish men were allowed more than one wife. King Dermot's second wife was Sadhbh Ní Fhaolain.
Mór was the mother of Aoife of Leinster, the wife of Richard de Clare, Earl of Pembroke, known to history as Strongbow.