James Berkeley James Berkeley James Berkeley (died 1327) was Bishop of Exeter for a period of three months in 1327, which term was cut short by his death or possible murder. Berkeley was a younger son of Thomas de Berkeley, 1st Baron Berkeley (1245-1321), "The Wise", feudal baron of Berkeley of Berkeley Castle in Gloucestershire, by his wife Joan de Ferrers, a daughter of William de Ferrers, 5th Earl of Derby by his wife Margaret de Quincy, a daughter of Roger de Quincy, 2nd Earl of Winchester. Berkeley was elected bishop on 5 December 1326 and was consecrated on 22 March 1327.
Margaret Mortimer, Baroness Berkeley Margaret Mortimer, Baroness Berkeley Margaret Mortimer, Baroness Berkeley (2 May 1304 – 5 May 1337) was the wife of Thomas de Berkeley, 3rd Baron Berkeley. She was the eldest daughter of Roger Mortimer, 1st Earl of March, the "de facto" ruler of England from 1327 to 1330, and his wife Joan de Geneville, Baroness Geneville. Margaret Mortimer was the eldest of the twelve children of Roger Mortimer, 1st Earl of March and Joan de Geneville, Baroness Geneville. Her paternal grandparents were Edmund Mortimer, 2nd Baron Mortimer and Margaret de Fiennes. Her maternal grandparents were Piers de Geneville, of Trim Castle