Gerveys came from a minor gentry family resident at Bonallack in western Cornwall. He is first heard of in 1420, when he went to France as a man-at-arms in the retinue of Hugh Courtenay, earl of Devon.
Certainly, his property made Gerveys a man of some consequence in the borough of Helston, and clearly qualified him to represent his neighbours in Parliament. While nothing is known of his activities in the Commons, it is clear that Gerveys used his journey to London to attend to his private affairs in the Westminster law courts.
Gerveys’s standing was such that he might have reasonably expected to hold office under the Crown, and his attendance at the Cornish shire elections of 1437, the year when his cousin James Flamank* was elected to represent Bodmin, suggests that he took an interest in national, as well as local affairs. His failure to secure royal appointment may have owed something to his repeated brushes with the law. Thus, in 1439 he came to blows with another man in the churchyard of St. Thomas the Martyr;
By this date Gerveys regularly resided in a house in St. Mary’s Street in Helston, and it is a mark of the respect he enjoyed in the town that in the autumn of 1456 he was chosen as mayor.
Little else is recorded of Gerveys’s life after Edward IV’s accession. In 1463 he was being sued for a debt of four marks by Richard Reynold (formerly attorney to Arundell and Treuthgans in their litigation against him),
