Surprisingly, despite this MP’s unusual name, nothing has been discovered about his family background. By the time that he first appears in the records, at the beginning of Henry VI’s reign, he was already an ‘esquire’ engaged in royal service in Ireland. It is unclear to whose patronage he owed his appointment in the lordship as escheator and clerk of the markets, for there is no evidence of a connexion between him and the then lieutenant of Ireland, the earl of Ormond. Some of Founteyns’ official duties were performed by deputies, and he is known to have been in England on royal business in the spring of 1423. Although still holding his Irish offices in July 1424, he was replaced before September 1428,
The manor of Clapham belonged to the Westons of Albury, and was held by Founteyns’ wife Agnes in jointure with her previous husband.
Founteyns’ wife died on 28 Aug. 1434, and it fell to him, as escheator, to conduct the inquisition post mortem, although by the time he did so, at Croydon on 11 Nov. following, he was no longer in office.
Meanwhile, Founteyns had been named in 1435 among the recipients of the goods and chattels of Thomas Haseley. He found himself in exalted company: John Kemp, archbishop of York, the earls of Stafford and Suffolk, and a number of royal clerks, including Haseley’s kinsman William Godyng*, were associated with him.
Founteyns, who is last mentioned as present at the Surrey hustings of 1450, died before March 1455. He was survived by his second wife, Elizabeth, who at that date granted her moveable goods to a body of men headed by (Sir) John Fortescue*, c.j.KB, and including Thomas Gower I*. The latter acquired the manor of Clapham at about the same time. Before May 1460 Elizabeth married Robert Percy, a notary public of London, and she then made a quitclaim of her dower lands in Clapham to Nicholas Gaynesford* and others to whom Founteyns’ surviving feoffees, Godyng and John Philipp of Godalming, had conveyed his estate.
