Events

• Taira no Kiyomori becomes the first samurai to be appointed Daijo Daijin, chief minister of the government of Japan
• Peter of Blois becomes the tutor of William II of Sicily
• Absalon, archbishop of Denmark, leads the first Danish synod at Lund
• Absalon fortifies Copenhagen
• William Marshal, "the greatest knight that ever lived," is knighted
• Afonso I of Portugal is defeated by the Kingdom of Leon
• Amalric I of Jerusalem unsuccessfully invades Egypt
• William of Tyre becomes archdeacon of Tyre
• May 29 - Battle of Legano , in which The Lombard League defeats Emperor Frederick I

Births

• September 10 - Alexius II Comnenus, Byzantine emperor

Deaths

• Abraham ibn Ezra, Jewish writer
• Robert of Melun, Christian theologian and English bishop

Heads of states

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