Norman forces under Count Roger I ("Bosso") conquer Syracuse, the last Muslim stronghold in Sicily.[1]
England
August 1 – King William the Conqueror calls for a meeting at Old Sarum, where he invites his major vassals and tenants-in-chief to swear allegiance to him. This is known as the Oath of Salisbury.
The Domesday Book is completed. Drawn up on the orders of William I; it describes in detail the landholdings and resources in England.
The population in England is estimated to be 1.25 million citizens with 10% living in boroughs.[2]