Career
He was an ancestor of Diana, Princess of Wales. Horace Seymour was the son of Admiral Lord Hugh Seymour (son of Francis Seymour-Conway, 1st Marquess of Hertford) and Lady Anne Horatia Waldegrave. Elizabeth Mary Browne, in July 1835.
Lieutenant-Colonel
Charles Francis Seymour (13 September 1819 – 5 November 1854), killed at the Battle of Inkerman
Frederick Beauchamp Paget Seymour, 1st Baron Alcester (12 April 1821 – 30 March 1895)
Adelaide Horatia Elizabeth Seymour (27 January 1825 – 29 October 1877), who married Frederick Spencer, 4th Earl Spencer, and was an ancestor of Diana, Princess of Wales.