Frances Seymour, Duchess of Somerset English noblewoman (1599-1674) (1599–1674) Parents Frances Walsingham Robert Devereux, 2nd Earl of Essex Children unknown Seymour John Seymour, 4th Duke of Somerset Lady Jane Seymour William Seymour, Lord Beauchamp Robert Seymour, Lord Beauchamp Frances Darcy, Countess of Holderness Henry Seymour, Lord Beauchamp Lady Mary Seymour Siblings Ulick Burke, 1st Marquess of Clanricarde Robert Devereux, 3rd Earl of Essex Elizabeth Sydney Mary Bourke Honora de Burgh Dorothy Stafford Walter Devereux Partners William Seymour, 2nd Duke of Somerset
