William de Berkeley, 1st Marquess of Berkeley

[5] He was styled as Viscount of Catherlough (now known as County Carlow, Ireland) between 1481 and 10 February 1485.

[11] William was created Viscount Berkeley on 21 April 1481, as a Privy Counsellor (PC) on 5 March 1482/83, and as Earl of Nottingham on 28 June 1483.

He disinherited Maurice, as having brought shame on the noble House of Berkeley by marrying, beneath his status, to Isabel Mead, daughter of Philip Mead of Wraxall, an alderman and mayor of Bristol in 1459, 1462 and 1469.

[12] In order to achieve this, the castle, lands and lordships composing the Barony of Berkeley he settled on King Henry VII and his heirs male, failing which to descend to his own rightful heirs.

Thus, in 1553 on the death of King Edward VI, the unmarried grandson of Henry VII, the Berkeley inheritance returned to the family.