Stephen, King of England began to influence the loyalty of many Anglo-Norman barons, who feared losing their lands in England to Robert and the Empress, and their possessions in Normandy to Geoffrey. Many started to leave Stephen's faction. His friend and advisor Waleran was one of those who decided to defect in mid-1141, crossing into Normandy to secure his ancestral possessions by allying himself with the Angevins, and bringing Worcestershire into the Empress's camp. Waleran's twin brother, Robert of Leicester, effectively withdrew from fighting in the conflict at the same time. Other supporters of the Empress were restored in their former strongholds, such as
Norman conquest of England Mercia, fighting Norman forces based in Hereford. These events forced William to return to England at the end of 1067. In 1068 William besieged rebels in Exeter, including Harold's mother Gytha, and after suffering heavy losses managed to negotiate the town's surrender. In May, William's wife Matilda was crowned queen at Westminster, an important symbol of William's growing international stature. Later in the year Edwin and Morcar raised a revolt in Mercia with Welsh assistance, while Gospatric, the newly appointed Earl of Northumbria, led a rising in Northumbria, which had not yet been occupied by the Normans. These rebellions rapidly