The son of a second marriage, Yelverton made his name through the law.
In Easter term 1422 Yelverton acted as a pledge for a London skinner, John Harrys of London, in a suit for a debt upon a bond that the latter was pursuing against Thomas Hoo I*.
Outside Norwich, Yelverton began his career as an ad hoc commissioner in the late 1420s, and he was appointed to the commission of the peace in Norfolk soon afterwards. In the 1430s he represented Great Yarmouth in two consecutive Parliaments, despite having acted as counsel for Norwich in a dispute between the city and that borough a few years earlier. He is not recorded as having had any connexion with Yarmouth before 1435 and it is not known why its burgesses should have elected him to the Parliaments of 1435 and 1437. Possibly the patronage of Sir John Fastolf, with whom he became closely associated and whose family originated from Yarmouth, helped Yelverton to win his seat, although the burgesses must also have appreciated the advantages of having an able lawyer as one of their representatives. Their counterparts in another Norfolk borough, Bishop’s Lynn, certainly appreciated the potential value of Yelverton’s services. When they entered negotiations to purchase the bishop of Norwich’s tollbooth in their town in 1439, he was one of the bishop’s council with whom they dealt. In order to advance their cause, as well as to secure his future counsel in other matters, they offered him a retainer of 40s. p.a.
Within a year of leaving his second Parliament, Yelverton was ordered to take up the rank of serjeant-at-law, an honour bestowed on him in July 1438. By the following year he had begun working as a justice of assize on the south-western circuit, and he subsequently rode the western and home circuits later in his career. His activities as a justice of assize and a member of numerous commissions were just one aspect of his work as a serjeant-at-law. In the early 1440s he was retained by the duchy of Lancaster,
Yelverton’s judicial career lasted for almost 30 years and in common with those of most of his legal contemporaries it was not affected by political upheavals. Despite his membership of several anti-Yorkist commissions late in Henry VI’s reign, he was reappointed a justice of King’s bench after Edward IV came to the throne,
Like other lawyers, Yelverton performed much of his work outside the courts. Occasionally he was called upon to arbitrate in private disputes, most notably with regard to the estates of the Lords Berkeley in the late 1440s.
In subsequent years Yelverton played an important part in Fastolf’s legal battles with the allies and retainers of William de la Pole, earl (later marquess, then duke) of Suffolk, as well as with Suffolk himself. Whatever the plausibility of the hypothesis that he and Fastolf led an ‘East Anglian movement’ against local misgovernment by the duke’s followers after their master’s downfall and death in 1450, there is no doubt that he was a useful ally during the knight’s disputes with these men. During the autumn of 1450 he advocated approaching Richard, duke of York, then contemplating a visit to Norfolk, to seek his support against the leading de la Pole retainers, Tuddenham and Heydon, and he and Fastolf sought to secure the nomination of a sheriff who would see ‘justice’ done in Norfolk and Suffolk.
Along with Yelverton and William Jenney*, Paston was one of Sir John Fastolf’s principal legal advisers, counsellors and trustees, and the knight held all three men in high esteem during his irascible old age. On one occasion in the mid 1450s his factotum, William Worcestre, appealed to Paston to wait upon his master as soon as possible, for it was beyond the ‘simple wyttes’ of the household servants at Caister to ease his spirits. He added that when Fastolf ‘spekyth wyth Maister Zeluerton, yow, or wyth William Geney, and such othyrs as be autorised yn the law ... he ys content and haldeth hym pleased wyth your aunsuers and mocions ... . So wold Jesus one of yow iij or som such othyr yn your stede myzt hang at hys gyrdyll dayly to aunsuer hys materes’.
By the second half of 1461 Yelverton and Jenney (who was an attorney for the executors) were openly disputing a version of the knight’s will which made Paston the heir to the Fastolf estates in Norfolk and Suffolk and gave him authority over his fellow executors. Refusing to accept the validity of this document, dated 3 Nov. 1459 (just two days before Fastolf’s death), they referred instead to a will of the previous June.
Along with Fastolf’s other executors, Yelverton was also drawn into controversies, not solely with the Pastons, over property that the testator had purchased in Southwark. Late in life Fastolf had faced claims to some of his holdings there from Richard Weltden*, the son-in-law of the vendor. Weltden continued to press his claims after Sir John’s death, exploiting to his own advantage differences between the knight’s executors and feoffees and the wider dispute over the settlement of the Fastolf estates. In response to a suit that he and his wife brought in Chancery in the early 1460s, Yelverton and William Jenney denied any knowledge or responsibility for the matter, stating that John Paston and Thomas Howes had possession of Fastolf’s will and the evidences relating to it. Although both Paston and Howes subsequently appeared in Chancery to refute Weltden’s allegations, the plaintiffs won their case.
The quarrel over the Fastolf lands continued after John Paston’s death in May 1466. In the following year Yelverton took part in a sale of Hellesdon and Cotton to the duke of Suffolk and his mother, Alice de la Pole, and later that decade he supported their claims to Cotton and other Fastolf lands.
Any hopes that this agreement represented a final settlement soon proved premature, for shortly afterwards Thomas Howes, one of Fastolf’s executors and hitherto an ally of the Pastons, formally declared that the version of the knight’s will promoted by the family was a forgery. Following his dramatic declaration, he joined Yelverton in recommending to the court that John Mowbray, fourth duke of Norfolk, should buy Caister and other parts of the Fastolf estate, and that the money raised from the sale should go to charity, for the good of the dead man’s soul. In October 1468 he and the MP, along with Jenney and others, took it upon themselves to sell the properties in question to the duke, who in the following year made good his claim to Caister by seizing it by force.
Yelverton’s opposition to the Pastons has harmed his reputation, since he occurs as an enemy in much of their famous correspondence. It is now impossible to tell for sure who was in the right with regard to the Fastolf estate although, unlike the Pastons, Yelverton had nothing to gain personally from either version of the knight’s will. In the event, he came to terms with the Pastons before they recovered Caister, since negotiations for a marriage between Yelverton’s grandson and namesake and Anne Paston, one of the daughters of John Paston, were taking place by 1472. Yet, perhaps as a result of residual distrust between the two sides, these negotiations became both protracted and contentious, meaning that the marriage did not occur until shortly after the MP and his feoffees set aside a manor at Caister St. Edmund near Norwich for the couple on 16 Nov. 1476.
The manor had come to the Yelvertons through John Yelverton’s marriage with Margaret, daughter and heir of William Morley.
While Yelverton’s brass in Rougham church is still extant, it is damaged and no longer bears the date of his death. He was however still alive in the spring of 1478, since he conveyed all his goods and chattels to William Yelverton of Rougham, probably his son of that name by his second marriage, on 8 May that year.
The lack of a will or an inquisition post mortem for Yelverton means that the evidence for his lands is limited. Apart from the manors he had inherited at Rougham and Bayfield, it appears that he succeeded to three others at Rackheath, given that they were settled on his grandson and Anne Paston. The Rackheath properties had once belonged to the senior branch of the Yelverton family, which had become extinct upon the death of the childless Thomas Yelverton (son of the MP’s elder half-brother, Robert) some time after 1435.
