Edmund Beaufort, 2nd Duke of Somerset, English commander (b. 1406)
Edmund Beaufort, 2nd Duke of Somerset, 4th Earl of Somerset, 1st Earl of Dorset, 1st Marquess of Dorset styled 1st Count of Mortain, KG (1406 – 22 May 1455), was an English nobleman and an important figure during the Hundred Years' War. His rivalry with Richard, Duke of York, was a leading cause of the Wars of the Roses.