Lord Henry Seymour English ceremonial officer (1878-1939) (1878–1939) Parents Mary Seymour, Marchioness of Hertford Hugh Seymour, 6th Marquess of Hertford Children Lady Margaret Seymour Hugh Seymour, 8th Marquess of Hertford Siblings Lady Jane Seymour Lady Margaret Seymour Lady Victoria Seymour George Seymour, 7th Marquess of Hertford Lord George Seymour Lady Emily Seymour Lord Edward Seymour Partners Helen Grosvenor