Reginald de Dunstanville, 1st Earl of Cornwall Chamberlain". Reginald's sister was Rohesia, wife of Henry de Pomeroy (died c.1135), feudal baron of Berry Pomeroy in Devon. Reginald was invested with the Earldom of Cornwall by his first cousin (by blood) King Stephen (1135–1154), son of Henry I's sister Adela, Countess of Blois. He later supported Stephen's enemy and claimant of the English throne, the Empress Matilda, only legitimate daughter of Henry I, and thus by order of Stephen he forfeited his lands and honours. In about 1173 he granted a charter to his free burgesses of Truro in Cornwall, and addressed his meetings at Truro to "All
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