Sir Edward Adolphus Seymour (later St. Maur), 12th Duke of Somerset, etc. KG, PC (Piccadilly, London, 20 December 1804 or 1805 Stover Lodge, nr Torquay, 28 November 1885), styled Baron Seymour until 1855, was a British Whig aristocrat and politician, who served in various cabinet positions in the mid-19th century. He was also a baronet.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.