1143

Events

• Celestine II is elected pope.
• October 5 - Portugal is recognized by the Kingdom of Leon as an independent kingdom
• 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

• Emperor Nijo of Japan
• William the Lion of Scotland
• Pope Gregory IX

Deaths

• April 8 - John II Comnenus, Byzantine emperor
• September 24 - Pope Innocent II
• Ordericus Vitalis, Norman monk and chronicler, author of the Ecclesiastical History
• Fulk of Jerusalem, Latin King of Jerusalem