Duke of Somerset years after losing his position as Lord Protector, his titles were forfeited and he was beheaded on 22 January 1552. He was replaced in the minority government of Edward VI by John Dudley, Duke of Northumberland, whose pragmatic style contrasted with Seymour's mixture of idealism and arrogance. In 1644 Charles I granted the earldom of Glamorgan to Edward Somerset (1613–1667). He was a descendant of Charles Somerset, the illegitimate son of Henry Beaufort, 3rd Duke of Somerset. In return for obtaining military help from Ireland he promised Edward the title of Duke of Somerset. Under the Commonwealth Edward was banished
Edward Seymour, 12th Duke of Somerset Edward Seymour, 12th Duke of Somerset Edward Adolphus Seymour (later St. Maur), 12th Duke of Somerset, etc., (20 December 1804 – 28 November 1885), styled Lord Seymour until 1855, was a British Whig aristocrat and politician, who served in various cabinet positions in the mid-19th century, including that of First Lord of the Admiralty. Somerset was the eldest son of Edward St. Maur, 11th Duke of Somerset, and Lady Charlotte, daughter of Archibald Hamilton, 9th Duke of Hamilton. He was baptized on 16 February 1805 at St. George's, Hanover Square, London. He was educated at Eton and Christ Church, Oxford.