Walter Devereux (1411–1459)
Following the death of Edmund Mortimer, 5th Earl of March, on 18 January 1425, Richard, 3rd Duke of York inherited his estates along the Welsh Marches. This brought Walter Devereux into the retinue of the Duke, and he remained his loyal supporter throughout the War of the Roses. Devereux had been knighted by 22 September 1429 when he first represented Herefordshire in Parliament. He probably was in attendance on the Duke when he travelled with Henry VI to France for his coronation on 16 December 1429. On his return Devereux represented Herefordshire again in Parliament on 16 January 1430. He was listed on the subsidy rolls for Herefordshire of 12 January 1431 as holding his 1/3 of half a fee in Byford.
Walter Devereux, 7th Baron Ferrers of Chartley
Following his father's death on 22 April 1459, Walter Devereux assumed his place as the Steward of York's lands in Radnor, and in the Duke's retinue. He was with the Duke of York at the Battle of Ludford Bridge on 12 October 1459, but surrendered and threw himself on the King's mercy when York fled to Ireland following the defeat. Granted his life, he was attainted on 20 November 1459, and his lands awarded to Humphrey Stafford, 1st Duke of Buckingham. Devereux was permitted in 1460 to redeem his properties for a fine of 500 marks.