Thomas de Berkeley, 1st Baron Berkeley died at Berkeley Castle on 23 July 1321 and was succeeded in his titles by his eldest son Maurice de Berkeley, 2nd Baron Berkeley. Thomas de Berkeley, 1st Baron Berkeley Thomas de Berkeley, 1st Baron Berkeley (c.1251 – 23 July 1321), "The Wise", feudal baron of Berkeley, of Berkeley Castle in Gloucestershire, England, was a peer, soldier and diplomat. 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". Thomas de Berkeley
Maurice de Berkeley, 2nd Baron Berkeley his wife he had children including: His second marriage, in about 1316, was to Isabella de Clare, daughter of Gilbert de Clare, 6th Earl of Hertford by his wife Alice de Lusignan. Berkeley was imprisoned by the Despencers in Wallingford Castle in Berkshire (now in Oxfordshire), where he died on 31 May 1326 and was eventually buried in St Augustine's Abbey (now Bristol Cathedral) in Bristol, founded by his ancestor. He was succeeded by his eldest son Thomas de Berkeley, 3rd Baron Berkeley (born c. 1296). Maurice de Berkeley, 2nd Baron Berkeley Maurice de Berkeley, 2nd Baron Berkeley (April 1271