John’s family apparently derived its name from the town of Southwell in Nottinghamshire,
Southwell’s elections to three consecutive Parliaments for the Sussex town of Lewes are further indication of his close connexion with the duke of Norfolk, who was lord of the borough. That he was set apart from the burgesses-proper is evident from the description ‘esquire’ given him on the return to the first of these, the Parliament summoned to meet on 6 Nov. 1449. While at Westminster, he may well have joined in the vociferous attack made in the Commons to bring down Norfolk’s rival, the King’s chief minister William de la Pole, duke of Suffolk. If Southwell occupied an office at Lewes castle by appointment of his lord, this is not now documented. It is nevertheless clear that he was not in breach of the statutory requirements for MPs to be resident in their constituencies. In association with another Mowbray retainer, John Bekwith*, who accompanied him to the Commons in 1450, he rented a dovecote and garden in Lewes from the duke later on in the decade,
Although it seems very likely that Southwell was living in Sussex in the early 1450s, later on in the decade he was more active in Suffolk, where he acquired landed interests as a consequence of his marriage to Alana Berry, the coheiress with her sister Agnes, wife of Judge William Paston, of the estates of their parents.
At the same time, in 1455, Southwell was engaged in a suit in the King’s bench as a co-plaintiff with the duke’s brothers-in-law, the chancellor Thomas Bourgchier, archbishop of Canterbury, and Henry, Viscount Bourgchier, over tenure of the manor of Stockton in Norfolk, which the duke had long contested with Alice, dowager duchess of Suffolk. The three, apparently acting as the duke’s feoffees, claimed to have been wrongfully expelled after an escheator’s inquisition had found that Stockton pertained to the estate of Alice’s son, the young John de la Pole, duke of Suffolk. It was later claimed that in June 1453 John and his putative nephew Richard Southwell, along with other Mowbray retainers, had forcibly entered the manor, and during Richard’s term as escheator in 1455-6 Alice filed a Chancery bill against him for taking advantage of his office to enter Stockton illegally.
Southwell maintained his interests in Sussex, and it was as of that county that he brought a suit for debt in the court of common pleas in Hilary term 1456 against two men from London.
Meanwhile, Southwell briefly found employment under Edward IV as collector of customs and then searcher in Chichester harbour in the years 1463-5. No doubt this enabled him to keep an eye on the concerns of the new duke as they were affected by along the Sussex coast. Little of note is recorded about his personal affairs in this period, save that towards the end of 1464 he put his moveable goods into the hands of Robert Kirkham, the keeper of the rolls of Chancery, Richard Lee*, the alderman and former mayor of London, and the scrivener John Stodeley*, long an associate of the Mowbray retainers.
Southwell is not recorded alive thereafter, and may have died within a few years. He left no children by Alana Berry. In 1463 he had helped her to settle on Edmund Bardolf (probably her son by her earlier marriage) and Alice Gryce, to whom Edmund was betrothed, a number of properties and some 280 acres of land in Norfolk, at Tuddenham, Honyngham, Thorp and Claxton, this presumably forming part of their marriage contract. If the couple failed to have issue the property was to revert to Alana and her heirs,
There is nothing to indicate that Southwell had survived his second wife. His eldest son, Robert, born of his first marriage, ended his days in 1514 as an apprentice-at-law, and was buried at Barham in Suffolk. Robert left instructions that if his wife Cecily died without surviving issue by him their lands and tenements in Cambridgeshire should be sold in accordance with the will of his late father, to make provision for the souls of the latter and his wife Joan, Robert’s mother.
