The Battle of Hastings is the battle where William of Normandy defeated King Harold Godwinson to gain the English throne. Peterborough was involved as Abbot Leofric of Peterborough Abbey and a group of his followers accompanied King Harold as he rushed to meet the invading Normans. Leofric died on the way and all the rest of his party were killed at the battle.
Following the death of Leofric the monks appointed their own Abbot, Brando (Hereward the Wake’s uncle), without the consent of William. When Brando died three years later, William took his revenge by appointing Turold as Abbot, who was not a monk and was deeply unpopular. It was this appointment that gave Hereward the excuse to attack the Abbey and town.