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 home. William did not return to England until later in 1075, to deal with the Danish threat and the aftermath of the rebellion, celebrating Christmas at Winchester. Roger and Waltheof were kept in prison, where Waltheof was executed in May 1076. By that time William had returned to the continent, where Ralph was continuing the rebellion from Brittany. Once England had been conquered, the Normans faced many challenges in maintaining control. They were few in number compared to the native English population; including those from other parts of France, historians estimate the number of Norman landholders at around 8000. William's