Thomas de Berkeley, 3rd Baron Berkeley Thomas de Berkeley, 3rd Baron Berkeley Thomas de Berkeley (c. 1293 or 1296 – 27 October 1361), "The Rich", feudal baron of Berkeley, of Berkeley Castle in Gloucestershire, England, was a peer. His epithet, and that of each previous and subsequent head of his family, was coined by John Smyth of Nibley (d.1641), steward of the Berkeley estates, the biographer of the family and author of "Lives of the Berkeleys". He was the eldest son and heir of Maurice de Berkeley, 2nd Baron Berkeley by his wife Eve la Zouche. In 1327 he was made joint custodian of the deposed
Dudley Castle Somery, died in 1321. It is thought that the fortifications were complete by this date. The castle and estates passed to John Somery's sister Margaret and her husband John de Sutton. Subsequently, members of this family often used Dudley as a surname. John and Margaret were only in possession of the castle for a few years before the property was seized by the younger Hugh Despenser, a favourite of King Edward II. Despenser owned the castle from 1325-1326, being dispossessed when the king fell from power. The castle was returned to John and Margaret in 1327. It was probably during