1175
| 1175 • Treaty of Windsor: Ruaidrí Ua Conchobair (Rory O'Conner), the last High King of Ireland, submits to Henry II as vassal of Ireland. |
| 1175 • Treaty of Windsor: Ruaidrí Ua Conchobair (Rory O'Conner), the last High King of Ireland, submits to Henry II as vassal of Ireland. |