Stephen, King of England when he first arrived. Nonetheless Stephen probably reached his own estate on the edge of London by 8 December and over the next week he began to seize power in England. The crowds in London traditionally claimed a right to elect the king of England, and they proclaimed Stephen the new monarch, believing that he would grant the city new rights and privileges in return. Henry of Blois delivered the support of the church to Stephen: Stephen was able to advance to Winchester, where Roger, who was both the Bishop of Salisbury and the Lord Chancellor, instructed the royal treasury
Stephen, King of England time. On this occasion, however, William Martel, Stephen's steward, made a fierce rear guard effort, allowing Stephen to escape from the battlefield. Stephen valued William's loyalty sufficiently to agree to exchange Sherborne Castle for his safe release—this was one of the few instances where Stephen was prepared to give up a castle to ransom one of his men. In late 1143, Stephen faced a new threat in the east, when Geoffrey de Mandeville, the Earl of Essex, rose up in rebellion against the King in East Anglia. Stephen had disliked the baron for several years, and provoked the conflict by