King Duncan I is killed in battle against his first cousin and rival Macbeth. The latter succeeds him as King of Scotland.

Siward, Earl of Northumbria invades Scotland to support Malcolm Canmore against Macbeth of Scotland, who usurped the Scottish throne from Malcolm's father, King Duncan. Macbeth is defeated at Dunsinane.

King Macbeth is killed at the Battle of Lumphanan by the forces of Máel Coluim mac Donnchada.