Maurice de Berkeley Maurice de Berkeley Sir Maurice de Berkeley "the Resolute" (1218 - 4 April 1281), 5th (feudal) Baron de Berkeley, was an English soldier and rebel, residing at Berkeley Castle in the English county of Gloucestershire. Maurice was born in 1218 to Thomas de Berkeley and Joan de Somery. He married Isabel FitzRoy, the daughter of Richard FitzRoy, Baron of Chilham (an illegitimate son of King John of England) and Rose de Douvres, sometime before 12 July 1247. Berkeley fought in the French Wars and was invested as a knight before 1242. He inherited the title of Baron de Berkeley in
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