Nothing is known of Leynton’s origins. His career was entirely one of service, first to Ralph, Lord Cromwell, and then as one of his executors. This service began in the mid 1430s,
Leynton’s career was able to maintain its momentum after his lord’s death due to the central role he played in the executing of his will, of which he was one of the 11 executors nominated in December 1451. His legal training and intimate knowledge of the testator’s affairs was vital to the principal executor, William Waynflete, bishop of Winchester, in the resolution of the problems posed by a more than ordinarily complex will, and it was to Leynton that most of the work fell.
While the work absorbed most of his energies, it also made Leynton an object of patronage to the several important men who sought to gain from the dismemberment of Cromwell’s great estate. It explains why his late master’s friend, John Talbot, earl of Shrewsbury, while treasurer of England, secured for him his first Exchequer office, worth £7 10s. p.a., and an appointment as a customs controller.
There is little else to relate about Leynton’s career. In March 1460, along with other Exchequer officials, he was appointed as one of the receivers of the forfeited Yorkist lands, a reflection of his office rather than his political sympathies. Although he sued out a general pardon in February 1462 he had no difficulty adapting to the new regime. In the same month he was appointed to the joint-keepership, along with John Brydde*, of the royal castle of Horston pending its grant in the following August to William Neville, earl of Kent.
Throughout the 1460s and into the 1470s Leynton continued to be involved with the executing of his first lord’s will. For example, in 1467 he acted for Richard Quatermayns* in an exchange with the King of the manor of Hambleton – which Cromwell had purchased from the King’s father and which Cromwell’s executors had sold to Quatermayns – for manors forfeited by William, Viscount Beaumont.
Another revealing document is the will Leynton drew up on 14 May 1474.
The rest of Leynton’s will dealt with unfinished business concerning the execution of Cromwell’s testament. One matter appears to have particularly played on his mind. William Say (d.1468), former dean of the King’s chapel, had laid in pledge to the executors a book called ‘Avicene’ for a far less valuable book of Cromwell’s which he had then failed to return. Leynton instructed his fellow executor, (Sir) Thomas Tyrell*, to negotiate with Say’s executors ‘as conscience shall require’. The will also shows that Leynton had not been successful in securing all the moneys owing to him as the most active of Lord Ralph’s executors. At an unknown date, but probably shortly after Cromwell’s death, his fellow executors awarded him a fee of £20 p.a. in recognition of his past and in anticipation of his future labours, but by November 1466 he was owed £665 in respect of arrears for the fee and the money he had paid out of his own resources in connexion with the execution. This debt had risen, by April 1469, to over £915, and when he came to draw up his own will it still stood by his own reckoning at nearly £700. He laid down that 100 marks of this sum was to be paid to Tyrell and the remainder was to go to the building of Tattershall College in return for prayers for his soul. Clearly by the end of his life he had come to see his late master’s great project as in part his own. Further resources for endowing prayers for his soul were to be raised by the sale of the manor of ‘Gunvyles’ in Wymondham (Norfolk). That he held this manor was also due to his lengthy and arduous service to Cromwell. Between November 1466 and April 1469 his fellow executors, in consultation with the ordinary, ruled that this merited the additional reward of land worth £40 p.a. or £800 in cash. To this end ‘Gunvyles’ was granted to him. He instructed his own executors to sell it for the best market price and to put the profits to ‘such dedes of pite as theim shall thinke moost pleasing to god and for the surest relief of my soule’. This great investment in his soul’s welfare may reflect a concern to redress injustices committed in his service to Cromwell; it certainly reflects his lack of legitimate issue with a claim on his hard-earned wealth. His will was proved on 4 Nov. 1474.
