Edward Seymour, 1st Earl of Hertford Edward Seymour, 1st Earl of Hertford Edward Seymour, 1st Earl of Hertford, 1st Baron Beauchamp, KG (22 May 1539 – 6 April 1621), of Wulfhall and Tottenham House in Great Bedwyn, Wiltshire, of Hatch Beauchamp in Somerset, of Netley Abbey, Hampshire, and of Hertford House, Cannon Row in Westminster, is most noted for incurring the displeasure of Queen Elizabeth I by more than one clandestine marriage. He was the eldest son of Edward Seymour, 1st Duke of Somerset (c.1500–1552), brother of Queen Jane Seymour, uncle of King Edward VI and Lord Protector of England, by his second wife Anne Stanhope
Duke of Somerset Duke's death he was succeeded by his eldest son Edward Seymour (1717–1792). He died unmarried and was succeeded by his brother Webb Seymour (1718–1793) who became the 10th Duke. His son Edward Adolphus Seymour (1775–1855) was a noted mathematician and became the 11th Duke upon his father's death. He changed the family name to St. Maur but Seymour was still very often used. The 11th Duke was succeeded by his eldest son Edward Adolphus Seymour (1804–1885) who was created Earl St. Maur, of Berry Pomeroy in 1863. His eldest son who predeceased him Edward A. F. Seymour (1835–1869) was known