 He died 14 July 1361.His son by his first marriage having predeceased him, his heir was his seven-week-old son by his second marriage, Edward, who survived him by only three months, dying on 4 October 1361, at which time any barony created by writ fell into abeyance, according to modern doctrine, among the surviving daughters of his father.In 1361 the only surviving daughter of Edward de Montagu's first marriage to Alice of Norfolk was Joan de Montagu, then aged 12.