Elizabeth Seymour, Duchess of Somerset English heiress (1667-1722) (1667–1722) Parents Elizabeth Percy, Countess of Northumberland Josceline Percy, 11th Earl of Northumberland Children Charles Seymour, Earl of Hertford Anne Seymour Algernon Seymour, 7th Duke of Somerset Catherine Seymour Catherine Seymour Elizabeth Seymour Percy Seymour Siblings unknown son Montagu John Montagu, 2nd Duke of Montagu Ralph Montagu Henry Percy, Baron Percy Lady Anne Montagu Partners Charles Seymour, 6th Duke of Somerset Henry Cavendish, Earl of Ogle Thomas Thynne
