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 c. 1383)
On 8 March 1382 Walter Devereux was among those appointed Justice of the Peace for Herefordshire, empowered to arrest, imprison and punish rebels, and appointed a commissioner of Oyer and terminer with power to arrest, imprison and punish any who refused to assist him. He attended Parliament again in May, and had his appointment as Justice of the Peace reaffirmed in on 12 August 1382. Devereux represented Herefordshire in the Parliaments of October 1382 and February 1383. On 6 March 1383 Walter Devereux and Richard de Eton of the county of Hereford commitment by mainprise to John Burlev, Richard Burley and Roger Bierd the keeping of the manors of Mauwardyn, Blenleveny and Orleton, previously held by the late Edmund earl of March, and to hold the same until the lawful age of Roger, the earl's son and heir.