Events Europe Treaty of Windsor: Ruaidri Ua Conchobair (Rory O'Conner), the last High King of Ireland, submits to Henry II as vassal of Ireland. William of Tyre becomes archbishop of Tyre. The Massacre of Abergavenny ends with several Welsh noblemen dead at the orders of William de Braose. Vordingborg Castle is completed. The high academy of Bosnian religious organization in Moštre, Visoko, is first mentioned in Vatican archives. Asia A Song Dynasty Chinese… (More on 1175)