1148

Events

* June - The Second Crusade reaches Jerusalem. They meet at the Council of Acre and decide to attack Damascus.
* July - The Siege of Damascus ends in failure.
* Ramon Berenguer IV, Count of Barcelona conquers Tortosa from the Moors.
* King Afonso I of Portugal takes Abrantes from the Moors.
* Anna Comnena writes the "Alexiad", which is a biography of her father, Emperor Alexius I.
* Roger II of Sicily takes Susa and Sfax in Tunisia.

Births

* John of Brienne, king of Jerusalem and Latin Emperor of Constantinople (approximate date; d. 1237)
* Qiu Chuji, Chinese Taoist (d. 1227)
* Pope Honorius III (d. 1227)

Deaths

* April — Amadeus III of Savoy (b. 1095)
*November 2 - Saint Malachy (b. 1094)
* Conan III, Duke of Brittany (b. 1070)
* Gilbert de Clare, 1st Earl of Pembroke (b. 1100)
* William de Warenne, 3rd Earl of Surrey
* Alphonse I of Toulouse (b. 1103)