Probably the son of John Thoresby, mayor of Lynn in the mid 1420s,
As far as the evidence goes, Thoresby’s election in 1430 as a chamberlain of Lynn marked the start of his career as an office-holder in the borough. Before the end of the decade, he began the first of his three terms as mayor. During this initial term in that office, he was involved in selecting Lynn’s MPs for the Parliament of 1439, nominating the first four of the 12 electors in his capacity as mayor.
Within five months of completing his second term as mayor, Thoresby was returned to his first Parliament. The Parliament of 1445 did not dissolve until April the following year, and he and his fellow burgess, Thomas Burgh*, spent 225 days attending and travelling to and from Westminster, from where they returned home between sessions.
While all three of his Parliaments sat at Westminster, Thoresby also travelled to London at other times on borough business. In October 1444, for example, he and Burgh rode to London to meet Lynn’s feudal lord, the bishop of Norwich, and some 14 years later he and Henry Bermyngeham* attended at least two meetings of the King’s council to discuss commercial and naval affairs.
Although he lived to see Edward IV seize the throne and was still active at Lynn in mid 1461, Thoresby was no longer alderman of the Trinity guild or a member of the 24 by the autumn of the following year. Whether he had died in the meantime is impossible to tell, although he was certainly no longer alive at the beginning of 1468. By then William Dunton had begun a lawsuit at Westminster against the MP’s executors, his widow Margaret and son Robert, seeking the return of a couple of bonds delivered to Thoresby at Hadleigh, Suffolk, in September 1457. In one of the securities, the Norfolk esquire, Richard Croppell, had bound himself to Dunton in £40; in the other, Dunton had obliged himself in the same amount to Croppell. It would appear these were bonds of arbitration, entrusted to Thoresby for safe-keeping and perhaps connected with a dispute of the mid 1450s between Croppell and the Duntons of Hadleigh over property at Lynn.
Admitted to the freedom of Lynn in 1457,
What little evidence there is for Henry Thoresby’s property in Lynn itself shows that he lived in a house facing St. Margaret’s church. He appears to have carried out his business in the Damgate (now Norfolk Street), so he probably held property there as well. It is possible that it was he, rather than one of his descendants, who built the magnificent tomb chapel in St. Margaret’s dedicated to St. Stephen but popularly known as ‘Thoresby’s chapel’.
