) was a common year starting on Thursday
(link will display the full calendar) of the Julian calendar
January 7 – Emperor Henry V marries Matilda (or Maude), 11-year-old daughter of King Henry I of England, at Worms (modern Germany). A political conflict breaks out across the Holy Roman Empire after the marriage, triggered when Henry arrests Chancellor Adalbert and various other German princes.
Count Ramon Berenguer III (the Great) of Barcelona, joins the expedition to the Balearic Islands. A Pisan and Catalan fleet (some 450 ships), supported by a large army, conquer Ibiza and Mallorca. They destroy the bases on the islands used by Moorish pirates to prey on Mediterranean shipping.
Battle of Martorell: The Almoravid governor of Zaragoza, Muhàmmad ibn al-Hajj, launches an offensive against the County of Barcelona, but is defeated by Ramon Berenguer III.
As part of the Norman expansion southward, Count Routrou II of Perche enters the service of King Alfonso I (the Battler) of Aragon.
Emperor Hui Zong of the Song Dynasty sends a gift of Chinese musical instruments, for use in royal banquets to the Korean court of Goryeo, by request from King Yejong.
November – A large earthquake damages the areas of the Crusaders in the Middle East. From Antioch and Mamistra to Marash and Edessa are hit by the shocks.
The cathedral of Chichester in England, constructed of wood, is destroyed by fire.
Pontigny Abbey, a Cistercian monastery, is founded (located in Burgundy).
Al-Suhayli, Moorish scholar and writer (d. 1185)
Bhāskara II, Indian mathematician (d. 1185)
Dirk VI (or Theodoric), count of Holland (d. 1157)
Fujiwara no Shunzei, Japanese nobleman (d. 1204)
Gebhard III, German nobleman (approximate date)
Gerard of Cremona, Italian translator (d. 1187)
Henry of Scotland, 3rd Earl of Northumbria (d. 1152)
Otto I, German bishop and chronicler (d. 1158)
Ramon Berenguer IV, count of Barcelona (d. 1162)
February 24 – Thomas II, archbishop of York
Abu al-Mu'in al-Nasafi, Arab theologian (or 1115)
Álvar Fáñez (or Háñez), Castilian nobleman
Alypius of the Caves, Kievan monk and painter
Erard I, French nobleman and crusader (b. 1060)
Nestor the Chronicler, Kievan historian (or 1113)
Richard of Salerno, Norman nobleman (b. 1060)
Shahriyar IV, king of Mazandaran (b. 1039)
Tokushi, Japanese empress consort (b. 1060)