Information about Convers’s origins is lacking, but his career prior to his only return to Parliament was that of a soldier serving in Normandy in the closing stages of English rule. Whether he came from a gentry family is uncertain, although it may be pertinent that he was called ‘esquire’ when acting as lieutenant of the castle and town of Caen early in 1450, under the command of Robert Whittingham II*. On 5 Feb. that year the Exchequer was ordered to deliver to the captain and his lieutenant 1,000 lb of gunpowder, 1,000 lb of saltpetre, 600 bows and six gross of bow-strings as well as £27 in money for the cost of carrying these vital items to Caen, then facing a siege by the French. Another warrant was sent to the Exchequer three weeks later to pay Convers five marks as his reward for bringing letters from Whittingham to the King, presumably to report their precarious position.
It was not, apparently, until after the Yorkist victory at Northampton in July 1460 that Convers returned to royal employment. During the Parliament meeting in the autumn of that year he was granted the office of a serjeant-at-arms in the place of Thomas Pope* of Rye. This appointment was made for life as a reward for his good service in the French wars, and brought with it a daily wage of 12d.
Edward IV confirmed Convers in his post as a serjeant-at-arms in July 1461, with orders for payment of his wages from the first day of the reign. Besides this, he was granted in the following May a corrody at Norwich cathedral priory.
