Under the Treaty of Windsor, Concluded on This Date, Rory O'Connor Recognizes Henry as His Overlord

Under the Treaty of Windsor, concluded in 1175, Rory O’Connor, High King of Ireland, recognizes King Henry II of England as his overlord. In return, Henry agrees to acknowledge Rory’s kingship over the areas of Ireland not already under Norman control. Rory also agrees to collect tribute from other Irish rulers on behalf of the English crown. However, the treaty quickly breaks down, as Norman lords continue their expansion independently of the Crown, and Rory’s authority proves insufficient to enforce the agreement.