There is no recorded pedigree for Jarvis’s family; his father seems to have purchased lands in Brentwood, and was presumably the ‘Mr. Jarvis of London’ who had a child in South Weald a few years before Jarvis was born.
Jarvis’s brief tenure as clerk of the Pipe, one of the chief officers of the Exchequer, seems to have been as a caretaker for a more eminent candidate - perhaps Sir Thomas Edmondes*, who claimed Jarvis as a cousin.
Jarvis’s Exchequer position involved him in a political controversy in Parliament in June 1610, when Thomas Felton named him as a witness against Henry Spiller*, clerk of the recusancy fines, who was alleged to have protected Catholics from the rigours of the law. Spiller, who had a Catholic brother, was undoubtedly lenient in his treatment of recusants, but the substantive charge against him was no more than that he sought to maximize the Crown’s revenues from penal fines, and the Commons dismissed the charges against him.
It is possible that Jarvis’s election for Ilchester in 1621 was connected with his part in the Spiller affair, for there was indeed an attempt to revive the attack in Parliament. The decisive voice in Jarvis’s election was undoubtedly Sir Robert Phelips, who had persuaded the House to restore Ilchester’s franchise at the end of March with the intention of securing the borough’s electoral patronage.
It is not known when Jarvis succeeded his father as head of his family, but he was active as an Essex magistrate from 1617, dealing with a normal caseload including drunkenness, disorder, poaching, petty larceny, residential rights, witchcraft and, most often, bastardy.
Jarvis’s movements are difficult to trace in the final years of his life. He was still active in Essex in 1634,
