Events

• Anselm of Canterbury settles at the Benedictine monastery of Le Bec in Normandy.
• The College of Cardinals become the sole voters in the election of popes.
• Muhammed ben Da'ud, known as Alp Arslan becomes second sultan of the Seljuk Turks.
• Isaac I Comnenus resigned as Byzantine Emperor, appointing Constantine Ducas as his successor.
• Pope Nicholas II installed in opposition to Antipope Benedict X.

Births

• Antipope Benedict X
• Fulcher of Chartres, chronicler of the First Crusade

Deaths

• Michael Cerularius, Patriarch of Constantinople