Question: How long did the War of the Roses last where Henry Beaufort was an important Lancastrian military commander?
Sentence (from "Humphrey Stafford, 1st Duke of Buckingham"): Humphrey Stafford, 1st Duke of Buckingham, 6th Earl of Stafford, {'1': ", '2': ", '3': ", '4': "} (15 August 1402 – 10 July 1460) was an English nobleman and a military commander in both the Hundred Years' War and in the Wars of the Roses.
Relevant evidence: No