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
On 18 June 1463 Devereux was appointed as Constable of Aberystwyth Castle for life, and 10 August 1464 joint keeper of the Haywood in Herefordshire. In late 1467 he was granted Oyer and terminer in Wales with power to pardon or arrest, and specifically tasked with investigating counterfeiting, clipping, sweating and other falsifications of money. This was extended into Herefordshire, Warwickshire, Worcestershire, Nottinghamshire, Derbyshire, Staffordshire, and Shropshire in early 1468, and Devonshire and Gloucestershire later in the year. Devereux was further rewarded on 30 May 1468 with the grant of the custody of all castles, lordships, manors, lands, rents, and possessions with knights’ fees, advowsons, courts leet, views of frankpledge, fairs, markets, privileges and franchises of the late Sir Roger Corbet, and in the king's hands by reason of the minority his son and heir, Richard. In June 1468, Jasper Tudor, 1st Earl of Pembroke landed near Harlech Castle and captured Denbigh. Walter Devereux and William Herbert were assigned to raise an army in Gloucestershire, Herefordshire, Shropshire, and the marshes of Wales to attack the rebels; and on 14 August 1468, Harlech castle finally surrendered to the Yorkists.