William, Duke of Normandy, defeats King Harold II at the Battle of Hastings
War
1066
William the Conqueror collects statistics of realm in the Domesday Book
Geography
1085
"The Anarchy" in England (1139-1154) when Matilda fights Stephen for crown
War
1120
Adelard of Bath is translator of first Latin introduction to Euclid's Elements
Mathematics
1126
Empress Matilda's bid to be crowned opposed by London crowds
Government
1141