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William remained in England after his coronation and tried to reconcile the native magnates. The remaining earls – Edwin (of Mercia), Morcar (of Northumbria), and Waltheof (of Northampton) – were confirmed in their lands and titles. Waltheof was married to William's niece Judith, daughter of his half-sister Adelaide, and a marriage between Edwin and one of William's daughters was proposed. Edgar the Ætheling also appears to have been given lands. Ecclesiastical offices continued to be held by the same bishops as before the invasion, including the uncanonical Stigand. But the families of Harold and his brothers lost their lands, as did some others who had fought against William at Hastings. By March, William was secure enough to return to Normandy, but he took with him Stigand, Morcar, Edwin, Edgar, and Waltheof. He left his half-brother Odo, the Bishop of Bayeux, in charge of England along with another influential supporter, William fitzOsbern, the son of his former guardian. Both men were also named to earldoms – fitzOsbern to Hereford (or Wessex) and Odo to Kent. Although he put two Normans in overall charge, he retained many of the native English sheriffs. Once in Normandy the new English king went to Rouen and the Abbey of Fecamp, and then attended the consecration of new churches at two Norman monasteries.

While William was in Normandy, a former ally, Eustace, the Count of Boulogne, invaded at Dover but was repulsed. English resistance had also begun, with Eadric the Wild attacking Hereford and revolts at Exeter, where Harold's mother Gytha was a focus of resistance. FitzOsbern and Odo found it difficult to control the native population and undertook a programme of castle-building to maintain their hold on the kingdom. William returned to England in December 1067 and marched on Exeter, which he besieged. The town held out for 18 days. After it fell to William he built a castle to secure his control. Harold's sons were meanwhile raiding the southwest of England from a base in Ireland. Their forces landed near Bristol but were defeated by Eadnoth. By Easter, William was at Winchester, where he was soon joined by his wife Matilda, who was crowned in May 1068.