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
Elizabeth Spencer, Duchess of Marlborough in Blenheim Palace. Elizabeth Spencer, Duchess of Marlborough Elizabeth Spencer, Duchess of Marlborough (c.1713 – 7 October 1761), formerly the Hon. Elizabeth Trevor, was the wife of Charles Spencer, 3rd Duke of Marlborough. She was the daughter of Thomas Trevor, 2nd Baron Trevor of Bromham. She married Charles Spencer, then Earl of Sunderland on 23 May 1732, becoming Countess of Sunderland. The Earl's grandmother, Sarah, Dowager Duchess of Marlborough, disapproved of the marriage because Elizabeth's grandfather, the 1st Baron Trevor, had been a political opponent. The dowager commented that "she has very bad teeth, which I think is an objection