Events

• Manuel I Comnenus becomes Byzantine Emperor.
• Celestine II is elected Pope.
• October 5 - Portugal is recognized by the Kingdom of Leon as an independent kingdom although it had acted like one since the battle of June 24 of 1128 (Battle of São Mamede)
• Robert of Ketton makes the first European translation of the Qur'an, into Latin
• The exploration of the uncharted eastern parts of Germany begins and results in the founding of cities such as Lübeck
• Baldwin III crowned King of Jerusalem, succeeding his father Fulk.

Births

• July 31 - Emperor Nijō of Japan (died 1165)
• Pope Gregory IX (died 1241)
• King William I of Scotland (died 1214)

Deaths

• April 8 - John II Comnenus, Byzantine Emperor (born 1087)
• September 24 - Agnes of Germany, daughter of Henry IV, Holy Roman Emperor (born 1072)
• September 24 - Pope Innocent II
• November 13 - King Fulk of Jerusalem, Count of Anjou
• Hugh II, Duke of Burgundy (born 1084)
• William of Malmesbury, English historian (born 1080)
• Zamakhshari, Persian scholar (born 1070)

1143

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