 He was rewarded with the grant of Cheshunt manor, Hertfordshire, for life on 12 August; and assigned to investigate certain treasons and offenses committed by William Colingbourne late of Lidyard, Wiltshire; and John Turburville late of Firemayne, Dorset.On 26 July 1461 Walter Devereux was raised to the rank of Baron in right of his wife and on account of his great services against Henry VI, the Duke of Exeter, the earls of Pembroke and Wiltshire, and the other rebels and traitors, thereby becoming Lord Ferrers.On 24 April 1472 he was honored by creation as a Knight of the Garter.