On 12 October 1265 Henry III instructed the Treasurer of Hereford (Cathedral) to return to her a jeweled harness William's father had entrusted to him prior to the battle.

The King further committed Frome (Halmond), Holme Lacy, Wilby, Oxenhall, and 15 pounds of revenue from Lower Hayton for her maintenance, and her brother, Walter de Giffard granted the manors to Maud for life.

[12] The Herefordshire manors of La Fenne (Bodenham) and Whitchurch Maund were probably also placed in her hands as her son, Alexander de Freville, was called to demonstrate his right to warrant for them about 1287.

Lawton was already in Roger's hands as part of the collateral pledged for the ransom of Adam le Despencer that had not been returned to William Devereux the Elder.

William Devereux struggled to obtain revenue to regain his inheritance, and was forced to make accommodations with his stepmother and mortgage assets.

Aaron made this grant to Pycheford with the assent of Sir Robert Burnell, the Lord Chancellor designate, and the Justices assigned to the custody of the Jews.

On 2 January 1285 Robert Burnell, bishop of Bath and Wells and Chancellor of England, acknowledged the debt to Sir John de Pycheford of 100 marks to be levied in default of his lands in Shropshire.

On 18 February 1278 the inquiry post-mortem of Henry de Penebrigg (Penebrug) showed that he held the rent of Cattelee worth 4L 16s 8d by the grant of William Devereux.

[23] On 29 September 1280 William Devereux sued Elizabeth, the widow of Henry de Penbrugge (Penebrug), over a messuage, mill, and three carucates of land, etc.

Devereux claimed that Elizabeth had no entry except by a demise made by his father to Roger de Mortimer in time of war for the redemption of Adam le Despencer, and which should have reverted to him according to the provisions of Dictum of Kenilworth.

In 1268 Robert le Paneter had restored to Maud his lands in Trumpington and quieted his claim until the lawful age of the heirs of Richard de la Bere.

[31] On 3 November 1281 Devereux acknowledged a debt to Henry de Len, clerk, of 10 marks to be levied in default of payment of his lands in county Hereford.

William Devereux was among them when he impleaded his uncle, Roger Bigod Earl of Norfolk and Marshal of England, for half a knight's fee in Runston and the vill of St. Peter in Netherwent.

[j] On 22 July 1287, William Devereux, Lord of Lyonshall, acknowledged a debt to Walter de la Barre of 14L 3s to be levied in default of payment from his lands in Gloucestershire and Herefordshire.

[40] Before 1290, William granted Ballingham to the Priory and Convent of St. Guthlac in Hereford for 50 marks sterling, and this charter was witnessed by his son, Walter Devereux.

The death of Roger Burnell, Bishop of Bath and Wells and Lord Chancellor, on 25 October 1292 removed an important protector of William Devereux.

In 1293 William Devereux was ordered to release to Roger Bernard 1 ½ acres of land in Bodenham that was forfeited by Thomas Wydye.

On 6 February 1294 Devereux, Stephen Caldicock, John fitzWalter, Gilbert Balwh, and Hugh Balle of Hertfordshire acknowledged the debt of 24L to Goodknave.

Devereux requested peace from further duress, and claimed that due to these he would be unable to go with Lord Edmund back to Gascony when called to muster on 1 November.

[47] Stephen Devereux subsequently brought suit in 1310 against Walter de Langton claiming that the transfer to William Tuchet violated the restriction on alienation of fee tail, which required property to be passed down within the same family.

The verdict went against Stephen as the court found he possessed no claim on the property as long as William Devereux was still alive, and he yielded control of Lyonshall.

His later family connection to Robert Burnell, Bishop of Bath and Wells and Lord Chancellor, through his second wife would be an even stronger support in the recovery of his position.

William Devereux was a member of the retinue of Humphrey de Bohun, 3rd Earl of Hereford, and supported him in his efforts to reassert his claim to Brecon by force following the death of Henry III in 1272.

On 2 July 1277 Devereux was summoned to muster at Worcester for military service against Llywelyn, Prince of Wales, and participated in the seizure of the harvest on Anglesey that summer.

Following the Treaty of Aberconwy on 9 November 1277 hostilities lessened, but ongoing disturbances continued over the next few years as Edward I tried to extend English law and systems into Wales.

The king called for men from Lyonshall, and William Devereux probably fought in the retinue of the earl of Hereford as the English responded with force.

This conflict escalated into a private war with William Devereux supporting Humphrey de Bohun until Edward I forced a conclusion in January 1291.

William Devereux also acknowledged in 1286 the advowson of the ‘Church of Wylehy juxta Castell-Bukenham’ to be the right of Simon, Abbot of St. Mary's Abbey (York).

William Devereux, as a holder of lands or rents in excess of 20L yearly, was summoned to muster at London 7 July 1297 for further service in parts beyond the seas.

In Easter of 1315 Lucy, widow of William Devereux, brought a writ of dower against a guardian who vouched, but this was not allowed because he was not tenant of a freehold.