William de Berkeley, 1st Marquess of Berkeley William de Berkeley, 1st Marquess of Berkeley William de Berkeley, 1st Marquess of Berkeley (1426 – 14 February 1492) was an English peer, given the epithet "The Waste-All" by the family biographer and steward John Smyth of Nibley. He was buried at "St. Augustine's Friars, London" according to one source, but most likely in the Berkeley family foundation of St Augustine's Abbey, Bristol. William of Berkley was born to James Berkeley, 1st Baron Berkeley, and Lady Isabel Mowbray at Berkeley Castle in Berkeley, Gloucestershire, in 1426. His first marriage was in 1466 to Elizabeth West, daughter of Reginald West, 6th
William Berkeley, 1st Earl FitzHardinge petitioner's claim was not made out. William received Berkeley Castle and the other estates by will, and on 2 July, after the adverse decision of the Lords Committee, he claimed a writ of summons as a Baron as Baron by tenure of Berkeley Castle. The claim was fully laid before the Committee for Privileges in 1828 and 1829, but the Lords gave no judgement on the case. The eldest son born after the 1797 Lambeth marriage of the fifth Earl, Thomas Moreton FitzHardinge Berkeley, became on the Earl's death in 1810 "de jure" 6th Earl of Berkeley — however, he