Mortain was captured at the battle of Tinchebrai (1106) and forfeited his possessions. Some years later, Henry bestowed the comtéship on his nephew Stephen, who became king in 1135. On Stephen's death (1154) his surviving son William became count of Mortain, but when William died childless in 1159 the title was resumed by Henry II. On the accession of Richard I (1189) he granted it to his brother John, who was thenceforth known as count of Mortain until he ascended the throne (1199). With his loss of Normandy the "comté" was lost, but after the recapture of the province by the
Sussex in the High Middle Ages England was unsuccessful. Following charges against Robert de Bellême around his support for the failed invasion of Robert Curthose, Robert de Bellême fortified Arundel Castle around 1101. This led to forces of Henry I besieging Arundel Castle in 1102 for 3 months, building siege castles in the vicinity of Arundel including probably at Warningcamp and perhaps Ford. Henry I's forces confiscated the castle and held it himself. As the second wife of Henry I Adeliza of Louvain was Queen of England from 1121 until Henry's death in 1135. On their marriage in 1121 Henry gave Adeliza the city of Chichester