William Seymour, 2nd Duke of Somerset (1587–1660), grandson, inherited the estates on the death of his grandfather the 1st Earl, his father having predeceased the latter. His grandson, William Seymour, 3rd Duke of Somerset (1652–1671) inherited at the age of 8 and died aged 19 when his heir became his uncle John Seymour, 4th Duke of Somerset (1629–1675). However, the heir to his estates in Hampshire, namely Netley Abbey (where the 1st Earl had died) and Hound, was his sister Elizabeth Seymour, wife of Thomas Bruce, 2nd earl of Ailesbury, which were soon sold in 1676 to the Marquess of Worcester.