October - Treaty of Windsor is made between Henry II of England and Ruaidrí Ua Conchobair, High King of Ireland, who agrees to rule unoccupied territory as a vassal.
Ruaidrí Ua Conchobair (1116–1198), king of Connacht and High King of Ireland
Aedh was blinded by Conchobar on Tairrdelbach's orders but Ruaidrí was protected by the Archbishop of Connacht, Muireadhach Ua Dubhthaigh.
Ruaidrí Ua Conchobair | Cathal Carragh Ua Conchobair | Aedh mac Felim Ó Conchobair | Aedh Dall Ua Conchobair |