Guillaume de Barentin
Guillaume de Barentin was Seigneur of Rosel in the 13th century. Although he does not appear in any other list of Bailiffs or Warden, George Balleine shows him in his Biographical Dictionary of Jersey as having held one or other post in 1267 and 1268.
Lord of the Isles
In the early years of the administration of the Channel Islands by the English Crown overall control was vested in the Lord of the Isles, usually a member of the Royal Family or a close friend and associate of the King.
They would appoint one or more island residents to be responsible for defence and administration. Although these responsibilities would eventually be split, in the 13th century there was little if any distinction between Bailiff and Warden and documents of the time frequently use both titles for the same person.
Although some held office for short periods, or a number of short periods in between government service elsewhere, the role was also to an extent hereditary, and Guillaume de Barentin’s father Drouet held the office on three different occasions before him. Guillaume’s son Drew was Warden for ten years early in the 14th century.
The first known reference to Guillaume is in 1264 as one of the knights holding Windsor Castle under his father for the King against the King's orders. On his father's death, before November 1265, he inherited Rosel Manor, Jersey, and Chalgrove Manor, Oxfordshire. In 1266 a Protection was issued to him, as he was going to France on the King's business.
In 1267 and 1268 he was Bailiff or Warden of the Isles under Prince Edward, afterwards Edward I, who was then Lord of the Isles; but he had ceased to hold this office by 1269. According to Blomfield's Norfolk he founded and endowed a chapel and hospital for lepers at Cheveres in that county on an estate that he had inherited from his mother.
By 1295 he was dead, for there was a family dispute about his property, and certain lands at Tilbury, Paglesham, Twinstead, and other places in Essex were taken into the King's hands, because of the default of the heirs against "Joan, late wife of William De Barentin". She was a daughter of William of Blauminster of Child Canefeld. Guillaume left two sons, Drogo/Drew and Jean.