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- Battle of Shaizar: Crusaders and Seljuk Turks fight to a draw in Syria.
- The Donglin Academy is established, in Song Dynasty China.
- April 13 – Henry V is crowned Holy Roman Emperor, by Pope Paschal II.
- May 24 – The Commune of Laus is destroyed by Milanese troops.
- Baldwin VII becomes Count of Flanders.
- Santarém and Sintra are captured, by the Almoravid troops of General Sir ibn Abi Bakr. The efforts of the Berbers to reconquer lost ground lead to the sack of Coimbra. The same year, the city experiences the sole urban rebellion against their lord to take place in Portugal.
- Alfonso VII becomes King of Galicia.
- Domnall Ua Briain becomes King of the Hebrides and the Isle of Man, following a request from the people of that kingdom to the King of Munster, to send them a ruler.
- The Synod of Rathbreasail marks the transition of the Irish church, from a monastic to a diocesan structure.
- Agnes of Babenberg, High Duchess consort of Poland, daughter of Leopold III (d. 1157)
- Andrei Bogolyubsky, prince of Vladimir-Suzdal (after 1157) (d. 1174)
- Josceline de Bohon, English religious leader (d. 1184)
- February 22 – Roger Borsa, King of Sicily (b. 1078)
- March 3 – Prince Bohemond I of Antioch (b. 1058)
- April 17 – Robert of Molesme, Christian saint and abbot (b. 1027)
- September 27 – Vekenega, Croatian Benedictine abbess
- October 5 – Robert II, Count of Flanders (b. 1065)
- October 26 – Gómez González, Castilian nobleman and military leader
- December 19 – Abu Hamid Muhammad ibn Muhammad al-Ghazali, Persian theologian (b. 1058)
- Cadwgan ap Bleddyn, Welsh prince of Powys
- Iorwerth ap Bleddyn, Welsh prince of Powys
- Richard II of Gaeta, consul and duke of Gaeta
- Otto II, Count of Habsburg
- Antipope Sylvester IV
- ōh No Masafusa, Japanese scholar and tutor (b. 1041)
- Felicia Cornaro, Venetian dogaressa
- Picard, Christophe (2000). Le Portugal musulman (VIIIe-XIIIe siècle. L'Occident d'al-Andalus sous domination islamique. Paris: Maisonneuve & Larose. p. 109. ISBN 2-7068-1398-9.
- de Oliveira Marques, António Henrique (1998). Histoire du Portugal et de son empire colonial. Paris: Karthala. p. 44. ISBN 2-86537-844-6.
- Moody, T. W.; Martin, F. X., eds. (1967). The Course of Irish History. Cork: Mercier Press. p. 116.