How long did the War of the Roses last where Henry Beaufort was an important Lancastrian military commander?
Henry Beaufort, 3rd Duke of Somerset Henry Beaufort, 3rd Duke of Somerset (26 January 1436 – 15 May 1464) was an important Lancastrian military commander during the English Wars of the Roses. He is sometimes numbered the 2nd Duke of Somerset, because the title was re-created for his father after his uncle died. He also held the subsidiary titles of 5th Earl of Somerset, 2nd Marquess of Dorset and 2nd Earl of Dorset.
Sir Edward de Courtenay Sir Edward Courtenay (c.1385 – c. August 1418) was the eldest son of Edward de Courtenay, 11th Earl of Devon (d. 5 December 1419). He fought at Agincourt, and was killed in a sea battle in Henry V's continuing campaigns in Normandy.