1054
The Great Schism between the Latin and Greek Churches
1066
September
King Harold of England defeats a Norwegian army at Stamford Bridge in Yorkshire
October
William of Normandy defeats Harold’s army at Hastings in Sussex
December
William is crowned King of England
1069-70
After a revolt in northern England, William leads a punitive expedition into Northumbria and devastates the country between York and Durham
1071
August
A Seljuk army under Alp Arslan — ‘Valiant Lion’ — routs the forces of the Byzantine Emperor at Manzikert, in what is now eastern Turkey. The victory opens up Anatolia to the Seljuks and leads ultimately to the First Crusade
1072
June
King William invades Scotland
November
Alp Arslan is killed by a prisoner while on campaign in Persia