John Beaufort, 1st Duke of Somerset was an English nobleman born around 1404. He was the son of John Beaufort, 1st Earl of Somerset and Margaret Beauchamp. John became the Duke of Somerset in 1443 and played a significant role in the Hundred Years' War against France. He was known for his military leadership and held various positions in the royal court. Throughout his life, John Beaufort was involved in the political struggles of the time, particularly during the Wars of the Roses. He was a supporter of the Lancastrian cause and served as a key figure in the conflict. John died in 1444, leaving a legacy tied to the tumultuous history of England.