Among later historians who were deceived by the Historia Britonum it is only needful to mention Higdon, Hardyng, Fabyan (1512), Holinshed (1580) and John Milton.
A story had gone about, even in the days of John of Gaunt, who, if we may trust the rhymer John Hardyng (Chronicle, pp. 290, 291), had got it inserted in chronicles deposited in various monasteries, that this Edmund, surnamed Crouchback, was really hump-backed, and that he was set aside in favour of his younger brother Edward on account of his deformity.
Hardyng's testimony is, moreover, suspicious as reflecting the prejudices of the Percys after they had turned against Henry IV., for Hardyng himself expressly says that the earl of Northumberland was the source of his information (see note, p. 353 of his Chronicle).
Pp. 3 6 9, 37 o) corroborates Hardyng to some extent; for we are told that John of Gaunt had once desired in parliament that his son should 'be recognized on this flimsy plea as heir to the crown; and when Roger Mortimer, earl of March, denied the story and insisted on his own claim as descended from Lionel, duke of Clarence, Richard imposed silence on both parties.
The chronicler John Hardyng was for many years in the service of Sir Robert, and in his Chronicle he eulogizes various members of the family.
Sells a certain Philipp Hardyng for 20 shillings.