The origins of Dewall’s family are obscure, but its name, still occasionally rendered ‘de Wall’ even in the fifteenth century, may point to Welsh antecedents. John’s parentage has not been established with any degree of certainty, but he may have been a son or other namesake of an older man who held lands in and around Dewchurch, regularly served his Herefordshire neighbours as a feoffee or witness to property deeds in the reigns of Henry IV and Henry V, and served as a tax collector in that county in 1413.
The later MP probably received some legal training which qualified him to serve as a justice of gaol delivery, as well as a j.p. of the quorum for much of his adult life. It is difficult to distinguish his early activities from those of his older namesake, but it may have been he who in June 1426 was appointed to a royal commission to inquire into the estates of the recently deceased earl of March, and who in 1429 served as an attorney at the Exchequer for Richard de la Mare*, then sheriff of Herefordshire.
Dewall took up residence at the ancient seat of his wife’s family, Dauntsey in Wiltshire, and assumed the place in county society traditionally reserved for the head of the family. In July 1443 he was added to the Wiltshire bench, and in subsequent years he was regularly appointed to royal commissions in the county, and periodically served his neighbours as a feoffee and witness to their property transactions.
It is rather less certain whether Dewall ever secured full payment, for he seems to have died at an uncertain date in late 1452 or early 1453. He was last appointed to a royal commission in August 1452, but may have been dead before a fresh commission of the peace for Wiltshire was issued in March 1453.
