Events

• Prince Andrey Bogolyubskiy sacks the Kievan Rus' capital Kiev.
• Start of the conquest of Ireland. Richard fitzGilbert de Clare ('Strongbow') makes an alliance with the exiled Irish chief, Dermot MacMurrough, to help him recover his kingdom of Leinster.
• Eleanor of Aquitaine leaves the English court of Henry II to establish her great court in Poitiers where the Courts of Love flourished.

Births

Deaths

• September 10 - Empress Maud, daughter of Henry I of England and Maud of Scotland, wife of Henry V, Holy Roman Emperor and Geoffrey of Anjou, mother of Henry II of England.

Heads of states

• England - Henry II Curt Mantle, King of England (reigned 1154 - 1189).
• France - Louis VII, King of France (reigned 1137 - 1180).