The commoness of William’s surname makes it difficult to be certain about his origins, but he was probably from a family that had long played a prominent part in the affairs of Leicester. His putative father was mayor of the town in 1420-1 and 1432-3, and was assessed on an annual income of £5 in the Leicestershire tax returns of 1435-6.
At a date before July 1431, Richard Botry, an agent of John Darcy, brother and heir male of Philip, Lord Darcy (d.1418), took from Clerk and his putative father herring and stockfish worth over £2 in name of toll at Torksey, where the Fosse Dyke joined the river Trent. This proved the catalyst for the referral to a panel of arbiters of the important question of the freedom of the burgesses of Leicester from the payment of tolls. In May 1416 Henry V had confirmed this customary freedom to his tenants of the honour of Leicester, but it remained unclear how far this freedom extended. The importance of the question is reflected in the status of the arbiters, the chief justices of both benches and the wealthy knight, Sir Richard Hastings*. While the men of Lincoln and Nottingham, among others, had long been exempt from the tolls due to the lord of Torksey, that privilege had not hitherto attached to those of Leicester. On 31 July 1431 our MP and Botry entered into mutual bonds in £20 to be bound by their award. Unfortunately the borough records note only the submission to arbitration not the award itself, perhaps an indication that its terms were unfavourable to the town.
The survival of his putative father at least into the late 1430s may explain why Clerk did not hold borough office until 1444-5, when, during the mayoralty of William Newby*, he acted as serjeant, an officer of the mayor entitled to wages of 40s. p.a. under a borough ordinance of 1379.
Clerk’s election to Parliament is the last certain reference to him. In Michaelmas term 1455 the mayor, Thomas Dalton*, appeared personally in the court of common pleas to sue Hotoft and three townsmen, including one William Clerk, for threatening him at Leicester, an episode in the dispute between the town and the royal bailiff.
