Frances Seymour, Duchess of Somerset numerous descendants include Queen Elizabeth The Queen Mother (and therefore The Queen and all of her blood descendants), Diana, Princess of Wales, and Sarah, Duchess of York. Frances Seymour, Duchess of Somerset Frances Seymour, Duchess of Somerset ("née" Devereux; 30 September 1599 – 24 April 1674), was an English noblewoman who lived during the reigns of Elizabeth I, James I, Charles I and Charles II. Her father was Robert Devereux, 2nd Earl of Essex, Elizabeth I's favourite who was executed for treason in 1601. She was the second wife of William Seymour, 2nd Duke of Somerset, and the mother of
Mary Montagu, Duchess of Montagu Mary Montagu, Duchess of Montagu Mary Montagu, Duchess of Montagu (15 July 1689 – 14 May 1751), formerly Lady Mary Churchill, was a British court official and noble, the wife of John Montagu, 2nd Duke of Montagu. She was the youngest surviving daughter of John Churchill, 1st Duke of Marlborough, and his wife Sarah. She married Montagu on 17 March 1705, when he was Earl of Montagu. They had five children: From 1714 to 1717, the duchess was a Lady of the Bedchamber to the Princess of Wales. She was painted by Sir Godfrey Kneller in 1740. A portrait of