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- July 8 or August 21 – Battle of Yancheng: Song Dynasty general Yue Fei defeats an army led by Jin Dynasty general Wuzhu, during the Jin–Song Wars.
- January 25 – Godfrey II, Count of Louvain becomes Duke of Brabant.
- April 8 – Roger II of Sicily is excommunicated by Pope Innocent II.
- April 9 – The Treaty of Durham is signed, between King Stephen of England and David I of Scotland.
- July 22 – Pope Innocent II, invading the Kingdom of Sicily, is ambushed at Galluccio and taken prisoner.
- July 25
- By the Treaty of Mignano, Pope Innocent II proclaims Roger II of Sicily as King of Sicily, Duke of Apulia and Prince of Capua.
- Battle of Ourique: The independence of Portugal from the Kingdom of León is declared after the Almoravids, led by Ali ibn Yusuf, are defeated by Prince Afonso Henriques. He then becomes Afonso I, King of Portugal, after calling the first assembly of the Estates-General of Portugal at Lamego, where he is given the Crown from the Bishop of Bragança, to confirm the independence.
- April – Second Council of the Lateran: The Anacletus schism is settled, and priestly celibacy is made mandatory within the Catholic Church.
- January 25 – Godfrey I, Count of Louvain and Duke of Lower Lorraine (as Godfrey VI)
- February 18 – Prince Yaropolk II of Kiev (b. 1082)
- October 20 – Henry X, Duke of Bavaria
- December – Roger of Salisbury, English bishop
- Empress Xing of China (b. 1106)