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.
William Devereux, Baron Devereux of Lyonshall
William Devereux, Baron Devereux of Lyonshall (–1314) was an English noble who was an important Marcher Lord as he held Lyonshall Castle controlling a strategically vital approach to the border of Wales in the time of Edward I and Edward II. He was the first of this family officially called to Parliament, and was ancestor to John Devereux, 1st Baron Devereux of Whitchurch Maund, the Devereux Earls of Essex, and the Devereux Viscounts of Hereford. His coat of arms was the same as his father's and described as "argent, fess and three roundels in chief gules" which passed to the descendants of his first wife, the Devereux of Bodenham; or "gules od un fesse d'argent ove turteaus d'argent en le chief" which passed to the descendants of his second wife, the Devereux of Frome.