John Beaufort, 1st Earl of Somerset, known as the Marquess of Somerset and Marquess of Dorset from 1397 to 1399, was an English-French nobleman and politician. Beaufort was the second son of John of Gaunt, eldest of the four children by his mistress Katherine Swynford, whom he later married in 1396.
- Occupation
- military personnel
- Position held
- member of the House of Lords, Lord Warden of the Cinque Ports, Lord High Admiral, Lord High Admiral
- Citizenship
- Kingdom of England
- Born
- 1373