Edward Seymour, 1st Duke of Somerset, English general and politician, Lord High Treasurer of England (born 1500)

Edward Seymour, 1st Duke of Somerset, 1st Earl of Hertford, 1st Viscount Beauchamp was an English nobleman and politician who served as Lord Protector of England from 1547 to 1549 during the minority of his nephew King Edward VI. He was the eldest surviving brother of Queen Jane Seymour, the third wife of King Henry VIII and mother of King Edward VI.

The Lord High Treasurer was an English government position and has been a British government position since the Acts of Union of 1707. A holder of the post would be the third-highest-ranked Great Officer of State in England, below the Lord High Steward and the Lord High Chancellor of Great Britain.