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
History of England 28 September 1066, William of Normandy invaded England in a campaign called the Norman Conquest. After marching from Yorkshire, Harold's exhausted army was defeated and Harold was killed at the Battle of Hastings on 14 October. Further opposition to William in support of Edgar the Ætheling soon collapsed, and William was crowned king on Christmas Day 1066. For five years, he faced a series of rebellions in various parts of England and a half-hearted Danish invasion, but he subdued them and established an enduring regime. The Norman Conquest led to a profound change in the history of the English state.