Hugh Bigod, 1st Earl of Norfolk Hugh became Constable of Norwich Castle in 1122. Hugh initially supported Stephen of Blois as king of England. On the death of Henry I in 1135, his nephew Stephen usurped the throne, despite the oath Stephen and the barons had sworn to accept Henry's daughter Empress Matilda as his successor. It was Bigod who asserted that, in his last days, Henry I had named Stephen to become king at the expense of his daughter Matilda. Civil war resulted when, in 1139 Matilda, commanded the military strength necessary to challenge Stephen within his own realm. King Stephen had the initial support
Henry I of England with William against Robert. Henry was present when William died in a hunting accident in 1100, and he seized the English throne, promising at his coronation to correct many of William's less popular policies. Henry married Matilda of Scotland but continued to have a large number of mistresses by whom he had many illegitimate children. Robert, who invaded in 1101, disputed Henry's control of England; this military campaign ended in a negotiated settlement that confirmed Henry as king. The peace was short-lived, and Henry invaded the Duchy of Normandy in 1105 and 1106, finally defeating Robert at the Battle of