Thomas de Berkeley, 3rd Baron Berkeley King Edward II, whom he received at Berkeley Castle. He was later commanded to deliver custody of the king to his fellow custodians, namely John Maltravers, 1st Baron Maltravers and Sir Thomas Gournay. He left the king at Berkeley Castle and "with heavy cheere perceiving what violence was intended" he journeyed to Bradley. The king was murdered at Berkeley Castle during his absence. As an accessory to the murder of the deposed king, he was tried by a jury of 12 knights in 1330 and was honourably acquitted. He married twice: He died on 27 October 1361 in Gloucestershire and
Baron Berkeley was created Viscount Berkeley in 1481, Earl of Nottingham in 1483, and Marquess of Berkeley in 1488. He had no surviving male issue, so the Marquessate and his other non-inherited titles became extinct on his death in 1491, whilst the barony passed "de jure" to his younger brother Maurice. However William had disinherited Maurice because he considered him to have brought shame on the noble House of Berkeley by marrying beneath his status to Isabel, daughter of Philip Mead of Wraxhall, an Alderman and Mayor of Bristol. Instead he bequeathed the castle, lands and lordships comprising the Barony of Berkeley