It is equally uncertain what motive influenced his defection from Richard. This has been said to have been Richard's withholding from him the large estates which Buckingham claimed should have descended to him as coheir of Bohun, as a reward for helping him to the Throne, and so did not fulfil the implied promise of the compact. But was this so? Richard may be readily believed to have been bad enough for anything, but was he thus ungrateful to the man, to whom he was indebted more than to any other for attaining his present position?
Upon this point there appears to be considerable doubt. Dugdale, under his notice of Stafford in the Baronage, includes the following:—
"Having thus been the principal agent in advancing Richard to the throne, and thereupon pressing his performance of what had been privately promised, this new King signed a Bill for Livery of all those lands unto him whereunto he pretended a right by descent from Humphrey de Bohun; sometime Earl of Hereford, and Constable of England. An abstract whereof I have here inserted, together with a schedule of the Castles and Manors affixed thereto.
"R.R.
"Richard, by the grace of God, King of England, &c. &c. To all, &c. Know ye, that We, not only considering, that our right trusty, and right entyrely beloved Cosyn, Henry, Duke of Buckingham, is Cosyn and Heir of blood to Humphrey Bohun, Earl of Hereford; and rightful inheritor of such inheritances, as were of the same late Earl, but also the true, feythful, and laudable service, the which our seid Cosyn hath in many sundry wises done unto us, to our right singular wele and plesure. Considering also and understanding, that the Mannors, Lordships and Lands, specified in the schedule, hereunto annexed, the which were parcel of the inheritance of the said Earl, and were chosen and accepted in purpartie by Harry the fifth, late King of England; son of Mary one of the daughters and heirs of the said late Earle; of a partition betwene the same late King, and Anne daughter of Alianore, another of the daughters and heires of the sayd late Earle; made by authority of Parliament in the second year of his reigne; in allowance of other Mannours, Lordships, Lands, &c., of the like value, allotted and assured in purpartie to the same Anne, come unto the hands of Edward the fourth, late King of England, our brother, by virtue of certain act or acts of Parliament, made against Harry the sixth, deceased without issue; so that our said Cosyn as true inheritor to the sayd inheritance in forme abovesayd, should by his death have had and inherited the said Mannours, Lordships, &c., specifyed in the said schedule, if the sayd act or acts of Parliament, had never been made. And also for certain other considerations Us especially moving, wille and grant unto our sayd Cosyn, that in our next Parliament to be holden, he shall be surely and lawfully, by act of Parliament restored, fro' the Feste of Easter last past, to all the foresaid Mannours, &c., specifyed in the sayd schedule; and the same have, hold, and enjoy, to him and to his heires, according to such states and titles, as he should or might have done, if none act of Parliament had been made against the sayd King Harry the sixth, touching the sayd Mannours, &c., at any time since the death of the sayd late Earle. And, that our sayd Cosyn now forthwith enter into all the same Mannours, and thereof take the issues, &c., to his own use, fro' the sayd Feast of Easter, unto the time he be thereto restored by authority of Parliament, in fourme above remembered; without any account or other thing yielding unto Us or our heires for the same. And, that he have the making of all Officers, Gifts, and Benefices, Wards, and other Profits, &c. In testimony whereof We have set our Signet, and Sign-Manuell.
"Yoven at our Mannour of Greenwich, 13th of July, of our Reign the First."
These Manors as enumerated in the schedule were fifty-three in number, lying in nineteen counties, of which "total sum valoris, £1084 1s. 9d." And he further adds,—
"Nay, an author of that time reports (Chron. MS. Joh. Rous in bibl. Cotton. p. 269.) that he (Richard) gave him all his riches, so that he then made his boast that "he had as many liveries of Stafford Knots, as Richard Nevill the late great Earle of Warwick had of Ragged Staves."
As we before observed, to attempt to explain or speculate upon the motives that actuated Buckingham in his extraordinary career, would be alike both useless and fruitless. His eagerness and zeal displayed to place Richard on the throne, his consent to, and consequent complicity in the cold-blooded executions of his wife's brothers and their associate at Pontefract, and also of Hastings, together with other heinous transactions, to the prejudice and discomfiture of the nearer tie of his wife's defenceless nephews, appear to have had no very definite purpose as regarded himself, but only exhibited the actions of an unscrupulous partisan and tool for others, the attributes of a weak, contemptible mind. Was he aware of, and did he also assent to, the last and most atrocious of Richard's crimes, the murder of the Princes in the Tower, toward both of whom, the poor boys stood nearly in the same relationship? If so, he was even more vile than Richard, for he had an excuse, ambition, albeit of the most loathsome kind, to offer,—which Buckingham had not, nor indeed any that can be imagined.
This question has, we believe, never been definitely answered, and so we prefer to give Buckingham the benefit of the doubt, and to hope that he did not do so. Although he appears to have excessively disliked the Queen-Mother and her family, and was the chief promoter of the movement to rob her sons of their royal heritage, still there does not appear to be any direct evidence to incriminate him as consenting to their deaths, after circumstances point to the contrary, and he is said to have made use of their inhuman fate, as one of the principal reasons for his desire to dethrone Richard.