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).
William Devereux (1219–1265)
In 1262 Llywelyn ap Gruffyd attacked the Welsh Marches again. On 22 December 1262 the king commanded William Devereux to appear with arms and horses on 9 January 1263 at Hereford to counter this invasion. On 24 January 1263 William Devereux was further commanded to come on 5 February 1263 to Hereford. Once there William and the other lords summoned were to divide the gathered forces for the defense of their castles and lands, and to insure that their castles were kept in good repair. On 3 March 1263 the English fought the Welsh at the Battle of Abergavenny. On 15 April 1263 Prince Edward specifically begs his father to command Will d’Evereus’ to “quod in castro suo de le Hales” and “moram faciet ac partes suas viriliter defendat.“ This translates to say, “that in his castle of Lyonshall he should stay and vigorously defend his estates.” On 25 May 1263 the king again commanded William Devereux to appear with horses and arms on 1 August 1263 at Worcester for a campaign against Llywelyn. For his ongoing faithful service the King ordered William be given a gift of 2 deer from the forests of Salop on 13 September 1263.