In 1067, William returned to Normandy with a large army and treasure. However, when he returned in December, Norman control was threatened. Edwin and Morcar fled William's court, leading to a rebellion against his rule. They resented the injustice and tyranny of his rule, including the loss of land, power, and money. The bad government of Odo of Bayeux and William FitzOsbern led to land seizures and the establishment of castles, which were resented. The heavy geld tax also caused resentment, with much of the revenue going back to Normandy.