Events

• Duke Richard of Aquitaine becomes Duke of Poitiers. He later becomes King Richard I of England.
• Pope Gregory VIII hosts the Council of Avranches where Henry II of England is absolved of the sin of murder in the matter of the assassination of Thomas Becket
• The Synod of Cashel ended the Celtic Christian system and brought them under Rome.

Births

• Baldwin I of Constantinople (died 1205)
• Fujiwara Moroie, last of the Japanese Fujiwara Regents

Deaths

• Agnes, daughter of Italian Count Amadeus III of Savoy (born 1095)
• Hemachandra, Indian mathematician, philosopher and historian (born 1089)

1172

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