Humphrey Stafford, 1st Duke of Buckingham, 6th Earl of Stafford, 7th Baron Stafford, of Stafford Castle in Staffordshire, was an English nobleman and a military commander in the Hundred Years' War and the Wars of the Roses. Through his mother he had royal descent from King Edward III, his great-grandfather, and from his father, he inherited, at an early age, the earldom of Stafford. By his marriage to a daughter of Ralph, Earl of Westmorland, Humphrey was related to the powerful Neville family and to many of the leading aristocratic houses of the time. He joined the English campaign in France with King Henry V in 1420 and following Henry V's death two years later he became a councillor for the new king, the nine-month-old Henry VI. Stafford acted as a peacemaker during the partisan, factional politics of the 1430s, when Humphrey, Duke of Gloucester, vied with Cardinal Beaufort for political supremacy. Stafford also took part in the eventual arrest of Gloucester in 1447.

Stafford Castle is an ancient Grade II listed castle situated two miles west of the town of Stafford in Staffordshire, England. From the time of the Norman Conquest and as recorded in the Domesday Book of 1086 it was the seat of the powerful Anglo-Norman Stafford family, feudal barons of Stafford, later Barons Stafford (1299) by writ, Earls of Stafford (1351) and Dukes of Buckingham (1444). The 14th-century stone keep was demolished in 1643, during the Civil War, having been held for the Royalists by Lady Isabel Stafford. The castle was remodeled in the early 19th century by the Jerningham family in the Gothic Revival style, on the foundations of the medieval structure, and incorporates much of the original stonework. Today the A518 Stafford-to-Newport Road passes next to it and it is a prominent local landmark visible from the M6 motorway and from the West Coast inter-city mainline.