| This Year In|
- King Henry II of England and Welsh King Rhys ap Gryffydd of Deheubarth sign a treaty.
- Exiled King Dermot MacMurrough of Leinster dies. The Earl of Pembroke, Richard Strongbow, declares himself King of Leinster in Dermot's place.
- king Henry II's son Geoffrey marries Constance of Brittany, bringing the Duchy of Brittany and British control. England and Brittany combined became known as the Plantaganet Empire.