Maurice de Berkeley, 4th Baron Berkeley Maurice de Berkeley, 4th Baron Berkeley Maurice de Berkeley, 4th Baron Berkeley (c. 1330 – 8 June 1368), "The Valiant", feudal baron of Berkeley, of Berkeley Castle in Gloucestershire, was an English peer. His epithet, and that of each previous and subsequent head of his family, was coined by John Smyth of Nibley (died 1641), steward of the Berkeley estates, the biographer of the family and author of "Lives of the Berkeleys". He was born in Berkeley Castle in Gloucestershire, the eldest son and heir of Thomas de Berkeley, 3rd Baron Berkeley by his wife Lady Margaret Mortimer. In August
Joan de Geneville, 2nd Baroness Geneville worse privations having been locked up inside various religious houses with even less money at their disposal. Joan was transferred from Skipton to Pontefract Castle in July 1326. Mortimer and Isabella landed in England two months later in September 1326, and they joined forces with Henry, 3rd Earl of Lancaster. On 16 November, King Edward was taken prisoner and eventually murdered at Berkeley Castle, presumably by Mortimer's hired assassins. From 1327 to 1330, Mortimer and Isabella jointly held the Office of Regent for her son, King Edward III who was duly crowned following his father's death. Mortimer was made constable