In 1001 Danish forces invaded England during the First Battle of Alton. When they reached Alton, the forces of Wessex came together and fought against them. About 81 Englishman were killed, including Ethelwerd the King’s high-steward, Leofric of Whitchurch, Leofwin the King’s high-steward, Wulfhere a bishop’s thane, and Godwin of Worthy, Bishop Elfsy’s son. Danish casualties were higher, but the Danes won the battle and fleeing Englishmen took refuge in Winchester. Alton is listed as having the most valuable recorded market in the Domesday Book under the name Aoltone in the ‘Odingeton Hundred Hantescire’. The Treaty of Alton was an agreement signed in 1101 between William the Conqueror’s eldest son Robert, Duke of Normandy and his brother Henry I of England. Henry had seized the throne while his elder brother was away on the first crusade. Robert returned to claim the throne, landing in Portsmouth. The two brothers met in Alton and agreed terms which formed the Treaty of Alton. Part of the main street through Alton is called Normandy Street, probably reflecting this event.