1121

Events

* The Concordat of Worms condemns Pierre Abélard's writings on the Holy Trinity. Later in the year, Canon Fulbert (not to be confused with Fulbert of Chartres), uncle of Heloise, has Abélard castrated.
* Reading Abbey is founded in England.
* August 12 - King David the Builder of Georgia, with 55,000 troops, defeats the 200,000-strong Muslim coalition troops at Didgori, in eastern Georgia.

Births

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Deaths

* December 11 — Al-Afdal Shahanshah, Caliph of Egypt (b. 1066)
* William of Champeaux, French philosopher
* Zhou Tong, archery teacher and second military arts tutor of famous Song Dynasty General Yue Fei