1078

Events 
 The Tower of London is built.
 Philaretos Brachamios does not keep his claim to the Byzantine Empire after he becomes duke of Antioch.
 August 7 – Battle of Mellrichstadt between Henry IV, Holy Roman Emperor and the German anti-king Rudolf of Swabia
 Births 
 King Alexander I of Scotland, Scottish royal (died 1124)
 Constance of France, daughter of King Philip I of France (died 1118)