Molesworth was returned for Cornwall unopposed in 1765, and again in 1768. Always considered a Tory, he was marked by Rockingham in July 1765 as ‘contra’; next: ‘Lord Edgcumbe saw him and is to bring him to me’; and finally ‘pro’. An independent country gentleman, Molesworth voted against the Government on the land tax and the nullum tempus bill; but does not appear in any division list on Wilkes and the Middlesex election. On 8 Mar. 1769 he supported Burke’s motion for an inquiry into the conduct of the Government during the riots in St. George’s Fields: living himself ‘in a county very liable to these disorders’, he knew of no case where order could not be restored ‘without the interference of a military power’.
In 1771 Molesworth, together with Edward Eliot and Humphrey Mackworth Praed, started the Truro Bank, and when at the by-election for Cornwall in December 1772 Praed stood against William Lemon, Molesworth was subsequently accused (in a broadsheet printed before the general election of 1774) of having favoured Praed after having ‘declared himself perfectly neutral’. At the general election of 1774 he stood on a joint interest with Praed, and was returned head of the poll. In the new Parliament Molesworth voted for Wilkes’s motion on the Middlesex election, 22 Feb. 1775; and according to published division lists
