Edward Seymour, Lord Beauchamp Edward Seymour, Lord Beauchamp Edward Seymour, Lord Beauchamp of Hatch (21 September 1561 – 21 July 1612) had a theoretically strong claim to the throne of England through his mother, but whose legitimacy was questioned. He was the son of Edward Seymour, 1st Earl of Hertford (1539–1621), by his wife Lady Catherine Grey (died 1568), younger sister of Lady Jane Grey, "The Nine Day Queen". His grandfather was Edward Seymour, 1st Duke of Somerset (executed 1552), all of whose titles became forfeit on his attainder by Parliament, during the reign of his nephew King Edward VI (1547–1553). His father was
Duke of Somerset him Marquess of Hertford in 1640 and on 13 September 1660, shortly before his death on 24 October, the title of Duke of Somerset was granted to him as its legitimate heir; following its non-existence for 108 years. He outlived his three eldest sons and as the dukedom descends to heirs male of the holder of the 1547 grant it passed to William Seymour (1654–1671) who was the son of the third son mentioned (lived 1626–1654). The 3rd duke died unmarried and the title passed to John Seymour (bef. 1646–1675) the last surviving son of the 2nd Duke, his uncle.