Events

• 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.
• Sweden's King Eric introduces Christianity to Finland (see History of Finland).
• December 14 - Nicholas Breakspear, the only English pope, is elected as Pope Adrian IV, succeeding Pope Anastasius IV.
• A chateau is built at Chinon by Theobald I, count of Blois.
• William I becomes king of Sicily.
• Nur ad-Din gains control of Damascus, uniting Syria under one ruler.
• 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 was firstly marked on the world map by Al Idrisi

Births

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

Deaths

• February 20 - Saint Wulfric of Haselbury Plucknett
• February 26 - King Roger II of Sicily (born 1093)
• August 16 - King Ramiro II of Aragon
• October 25 - King Stephen of England (born 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
• Vyacheslav of Kiev, Prince of Smolensk

1154

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