Mompeson’s mother Alice was grand-daughter to Thomas Bonham† (d.1420) of Great Wishford, Wiltshire, and his first wife, Katherine Knottingley. Although she was not Bonham’s heir (for he produced sons by his second wife), she inherited from Katherine the manors of Hanging Langford, Deptford and, most important, Bathampton ‘Wylye’, on the river Wylye some five miles upstream from Wilton. These were all in the possession of John’s father Robert Mompeson in the 1420s.
Whether or not Mompeson was already Thomas Drew’s son-in-law by the time of his return to Parliament for Wilton in February 1453, he had emulated him by becoming a member of the legal profession, although no information has been found about his training. He was probably a familiar figure in Wilton and well acquainted with the burgesses who elected him, given that he lived not far away and he had earlier attested two parliamentary elections held at the county court there. It seems likely that he was admitted to the freedom of Wilton before his election to the Commons; certainly, he figures in the earliest surviving lists of burgesses, dating from 1467, and so he remained until the end of his life. The men of Wilton were to choose Mompeson as an MP again, in 1469, although on that occasion the Parliament, summoned to assemble at York, did not meet in the event.
Probably an important factor in Wilton’s choice of Mompeson as a parliamentary representative was his association with the influential Wiltshire baronial family of Hungerford, to which he remained attached for many years. This attachment had begun while the MP was still a young man, and before the death in 1449 of Sir Walter Hungerford†, Lord Hungerford. The peer thought well enough of Mompeson as to leave him a bequest of a worsted bed complete with a silk tester and curtains, and a silver covered cup,
Named among the witnesses to the foundation deeds for the Hungerford almshouse at Heytesbury on 4 Apr. 1472, Mompeson was also present in the chapter house of Salisbury cathedral on 1 May when Lady Margaret formally completed the establishment of the Hungerford chantry,
Of course, Mompeson’s services as a lawyer were also engaged by other landowners in Wiltshire and Dorset, such as Thomas Beke*, Thomas Manston, and later on Sir Thomas Milborne and Katherine, Lady de la Warre.
Despite being colleagues in the service of Lady Margaret Hungerford, Mompeson and the highly acquisitive Thomas Tropenell had an ambivalent relationship, no doubt due to Tropenell’s vaunting ambitions to acquire ever more land. The two men clashed over ownership of ‘Uptonsfield’ in Laverstock, of which they had been enfeoffed in 1458, along with Robert, Lord Hungerford, by Mompeson’s brother-in-law John Osborne. Tropenell laid claim to the estate, alleging that the true heirs had been kept out ‘by the menis and concell’ of Mompeson.
Mompeson’s links with the staunchly Lancastrian Hungerfords made him acceptable to the government of the Readeption in 1470, and he was then not only appointed controller of customs and subsidies at Poole but also placed on the Wiltshire bench.
Mompeson’s eldest son, Drew, who followed him into the legal profession by becoming a fellow of Lincoln’s Inn in 1477,
Drew had asked to be buried in the chapel of St. Nicholas at Bathampton. His father John, our MP, composing his own will on 18 Sept. 1500, ‘as a meke child considering the foule condicion of this unstable life’, specified burial in ‘my newe chapell’ in the same place. Mompeson’s bequests of sets of vestments to seven religious houses, including the abbeys of Wilton and Shaftesbury, and to eight parish churches, at a cost of up to £18 15s., are not only suggestive of his piety and wealth, but also of the pride he took in his lineage, for these vestments were all to have a ‘scotchun of my armes and my wifes in the crosse on the back’. Sums of money were to go to bell-ringers and the poor men at the almshouse at Heytesbury (the Hungerford foundation), and a devout priest was left 20s. to pray daily for the testator’s soul, saying the prayers associated with Christ’s passion 150 times, as stipulated in Mompeson’s ‘litill boke’. Profits from his lands were to be spent on funding the same priest to provide divine services for him for 20 years (the details being set out in a ‘note in papir’ written by his son Henry). Different aspects of his character are revealed in bequests of ale and cheese and of silk doublets and gowns trimmed with fur. One of his daughters, Mary, was left £40 for her marriage, of which 40 marks had already been handed over to the mother of her husband Thomas Ludlow, and the rest was to be paid to Ludlow as soon as he made her sure of 20 marks’ worth of land in jointure. His grandson and heir, John (son of Drew), was left a gown, a gold cross, and three of the testator’s best goblets for his wife, on condition that he provided three of Mompeson’s servants with meat, drink, clothes and lodging for the rest of their days. The heir was to maintain his household for a whole year after his death (although the executors were to cover the expenses for six months), before he would receive goods worth £100. Mompeson’s widow Anne was to have a standing cup of silver, his second best gold ‘hoope’ to wear in remembrance of his soul, and the sum of £20, unless she meddled in the administration of the estate. If she relinquished her dower rights she was to have 20 marks a year for life, and she could keep her chamber in the mansion at Bathampton, but only for a year after his death. By contrast, his son Dr. Henry was to have his ‘fair litill bible’, his best gown, furred with martens, his best ‘hoope’ of gold, and goods worth 100 marks. Another son, William, was allotted the manor of Newton Toney and lands elsewhere to hold in in tail-male, and the issues of other of the testator’s purchased lands were to be used for the education of his grandsons Christopher and Thomas Mompeson, and to provide them with an inheritance worth 20 marks. Their brother Richard was to be maintained at Bathampton with an income of £2 p.a. until he was provided with land worth that sum. Three months earlier Mompeson had entrusted goods worth 200 marks to Henry, John Kyngsmyll†, serjeant-at-law, and others, to do with them according to his instructions. Henry was also named as an executor, along with John Bonham and John Burley, esquires.
