Henry Seymour English politician; (1503-1578) (1503–1578) Parents Margery Wentworth John Seymour Children Jane Seymour John Seymour Siblings Thomas Seymour, 1st Baron Seymour of Sudeley Edward Seymour, 1st Duke of Somerset Elizabeth Seymour, Lady Cromwell Jane Seymour Dorothy Seymour Sir John Seymour Partners Barbara Morgan