Walter Devereux (1387–1419)
Walter Devereux assumed a position in the retinue of Henry IV following the death of his father on 25 July 1402 at the Battle of Pilleth. On 13 December 1402 Sir Edmund Mortimer declared his rebellion against Henry IV, but Devereux stayed loyal to the king. He was probably present at the Battle of Shrewsbury on 21 July 1403, and subsequently was knighted. Sir Walter Devereux was placed on a Commission of array for Herefordshire on 8 September 1403 to raise troops for the defense against the king’s enemies who have lately invaded the realm. It is probable that Devereux was present when Henry IV faced off with a combined Welsh and French force in South Wales during the summer of 1405, but no major battle occurred and the English force had dispersed by October of that year. Devereux remained an important supporter of the efforts to suppress the rebellion in Wales as Prince Henry assumed responsibility for the fight. Walter Devereux would be among 14 men below the rank of baron who would be retained for life by Prince Henry (the future Henry V).
Walter Devereux (died 1402)
On 8 February 1391 Devereux conducted an inquiry into the alienation of the manor of Eaton Tregoes, Herefordshire. On 20 January John and Julian Kirby of La Verne sold for 100L Kimbolton manor, Huntingdonshire; and 2 carucates of land, 12 acres of meadow, and 13 shillings of rent in Laysters, Weston, Mappenore, Leominster, and Aston in Herefordshire to Walter Devereux. A writ was issued in Herefordshire on 17 February 1392 for Thomas, son of Llewelyn le Taillour, for not appearing to answer Walter Devereux regarding a debt of 40L. On 1 March 1392 Devereux was assigned to raise troops in Hertfordshire to resist an invasion in case of war after the expiration of the current truce.