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 (1411–1459)
On 2 July 1440 the Duke of York was again appointed Lieutenant of France. On 28 January 1441 Walter Devereux was appointed Justice of the Peace for Herefordshire, and on 18 February 1441 entrusted with collection of a tenth and fifteenth to fund an expedition by the Duke to defend English possessions in France. In May 1441 Walter Devereux was granted protection and appointed an attorney while in France in the company of Richard, Duke of York. During 1442 he was captain of the garrison at Arques (Normandy), and on 18 August led a garrison detachment to support the Siege of Conches, which surrendered on 7 September. Henry VI diverted an army promised to York to the Duke of Somerset, and Devereux was back in England on 16 February 1443 when he was appointed again Justice of the Peace for Herefordshire.