Aguillon family

[17] He inherited the lands of his mother-in-law and of his wife's grandfather,[18] including the manor of Addington, which carried the duty of making a special dish to be served at the king's coronation[19] and entitled the holder to attend Parliament as a baron, with William said to have taken his seat in 1233 and his son to have followed him after 1244.

Shortly before his death, he received a pardon for crimes of murder and robbery which he had committed in 1227, after which he had fled the country and been declared an outlaw.

After 1265 he was granted lands at Berwick, East Sussex, taken from the rebel William Marmion, and was Keeper of Arundel Castle during the minority of its heir in 1272.

After his second marriage to a rich widow, he acquired more landholdings: Portslade in Sussex and Wendover in Buckinghamshire, both in 1270,[23] together with Stapleford in Hertfordshire, where in 1285 he held both manor and advowson.

[24] He first married by August 1256 Joan, widow of Sir John Mohun (died 1253) and daughter of William de Ferrers, 5th Earl of Derby and his first wife Sibyl Marshal.

After her death before October 1267, he married Margaret, widow of Baldwin de Redvers, 7th Earl of Devon, and daughter of Count Thomas II of Savoy and his second wife Beatrice of Fieschi.

His daughter and heiress, from his first marriage to Joan, was: Reginald II (died after 10 August 1224), who may have been the son of William I and Mary, had lands in Norfolk in 1224.

[25] Sir Robert III (died before 1249), around 1217, founded Flitcham Priory,[26] and before 1239 he and his wife confirmed a grant by her father to Sibton Abbey.