Background
Berkeley was the son of Sir James de Berkeley and his wife Elizabeth (née Bluet).
Marquess of Berkeley Duke of Norfolk
Berkeley was the son of Sir James de Berkeley and his wife Elizabeth (née Bluet).
He was unable initially to claim Berkeley Castle, as it was taken in possession by the Earl and Countess of Warwick. In 1421, when the Warwicks finally gave up Berkeley Castle, James was summoned to Parliament by writ as Lord Berkeley.