Major Events
- May 24 Abbott Dauferio/Desiderius becomes Pope Victor III
- Aug 1 Results of the Domesday inquiry presented to William the Conqueror in Salisbury (the date of compilation and the Great Domesday are historically contestable)
- Oct 23 Battle of az-Zallaqah: Almoravid army of Yusuf ibn Tashfin defeats the forces of Castilian King Alfonso VI
Who Died in 1086
- Jul 10 Knut IV, the Saint, king of Denmark (1080-86), murdered
- Sep 25 William VIII, Duke of Aquitaine (b. 1025)