Jervoise resumed his family’s original patronymic in 1792 at the behest of his uncle, Tristram Hudleston Jervoise, from whom he inherited the Herriard property two years later. He added to it by marriage and purchase, though in 1820 he was living at the Wiltshire residence which had formerly belonged to his father.
Jervoise was apparently an assiduous Member, but is not known to have delivered a full speech in the House. He voted steadily with the Whig opposition to the Liverpool ministry on most major issues, including economy, retrenchment and reduced taxation, and dismissed supplicants for government favour with a reminder that his ‘independence’ was inviolable.
At that year’s dissolution Jervoise duly retired, and on the hustings his colleague paid tribute to his efforts.
