1154

Events

* April 23 - Nur ad-Din gains control of Damascus, uniting Syria under one ruler.
* October 25 - King Stephen of England dies at Dover, and is succeeded by his adopted son Henry Plantagenet, who becomes King Henry II of England, aged 21.
* December 14 — Pope Adrian IV (also known as Hadrian IV) succeeds Pope Anastasius IV as the 169th pope. Born Nicholas Breakspear, he is the only English pope in history.
* Sweden's King Eric introduces Christianity to Finland (see History of Finland).
* A chateau is built at Chinon by Theobald I, count of Blois.
* William I becomes king of Sicily.
* Muhammad al-Idrisi completes his atlas of the world, which will remain one of the most accurate maps until the Age of Discovery.
* Birmingham, England, and the Birmingham Bull Ring are founded.
* Bosnia becomes an autonomous duchy.
* Belgrade is rebuilt by Byzantine emperor Manuel I Comnenus.
* Tallinn, the capital of Estonia, is first marked on the world map by Al Idrisi.
* King Valdemar the Great of Denmark is crowned.

Births

* November 11 — King Sancho I of Portugal (d. 1212)
* Benoît de Sainte-Maure, French poet and troubadour (d. 1173)
* Queen Constance of Sicily, wife of Henry VI, Holy Roman Emperor (d. 1198)
* Minamoto no Yoshinaka, Japanese shogun (d. 1184
* Sune Sik Sverkersson, prince of Sweden
* Vsevolod the Big Nest, Grand Prince of Vladimir (d. 1212)

Deaths

* February 20 — Saint Wulfric of Haselbury Plucknett (b. c. 1080)
* February 26 — King Roger II of Sicily (b. 1093)
* August 16 — King Ramiro II of Aragon (b. c. 1075)
* October 25 — King Stephen of England (b. 1096)
* November 18 — Adélaide de Maurienne, queen of Louis VI of France (b. 1092)
* December 3 — Pope Anastasius IV
* Iziaslav II of Kiev, Prince of Vladimir and Volyn, (b. c. 1097, reigned 1134—1142)
* Vyacheslav of Kiev, prince of Smolensk (b. 1083, reigned 1113–1125)