Thomas de Berkeley, 3rd Baron Berkeley was succeeded by Maurice de Berkeley, 4th Baron Berkeley (born 1320, date of death unknown), eldest son and heir from his first marriage. 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
Llanthony Priory are also letters from Pope Clement III (CSM,i,p. 157–159), between 1185 and 1188, confirming further grants and gifts to the priory from Adam de Feypo and Geoffrey de Cusack in Ireland. The Priory became one of the great medieval buildings in Wales, in a mixture of Norman and Gothic architectural styles. Renewed building took place around 1325, with a new gatehouse. On Palm Sunday, April 4, 1327, the deposed Edward II stayed at the Priory on his way from Kenilworth Castle to Berkeley Castle, where he is alleged to have been murdered. Following Owain Glyndŵr's rebellion in the early 15th