William Seymour, 2nd Duke of Somerset, was an English nobleman and Royalist commander in the English Civil War.
William Seymour, Marquess of Hertford, later 2nd Duke of Somerset (1588–1660), portrait attributed to Gilbert Jackson (c. 1595/1600–1648), private collection
Lady Arbella Stuart (d.1615), Seymour's first wife
Frances Devereux, by Anthony van Dyck
John Seymour, 4th Duke of Somerset and 3rd Marquess of Hertford was an English peer and MP.
William Seymour, 2nd Duke of Somerset
…Seymour (1637 – 23 November 1679), who married Charles Boyle, 3rd Viscount Dungarvan and had issue. Her modern descendants included Elizabeth Bowes-Lyon. John Seymour, 4th Duke of Somerset (1646 – 29 April 1675), heir to his nephew in the dukedom in 1671, who married Sarah Alston in 1656 but left no children. Hertford died at Essex House…
John Seymour, 4th Duke of Somerset