Shiffner, the son of a failed Russia merchant, married well and in 1816 inherited Coombe Place at Offham, north of Lewes, where he had established an electoral interest. He was awarded a baronetcy by Lord Liverpool’s ministry in 1818 and was returned for Lewes for the fourth time in 1820.
He arrived in London for the new session of Parliament on 27 Feb. and voted against more extensive tax reductions, 3 Mar. 1823, before returning to Sussex to attend to local duties. He ensured that he was present to divide against Catholic relief, 17 Apr., and voted for the Irish insurrection bill, 12 May. He divided for the military and naval pensions bill, 18 Apr. He attended a Pitt Club dinner at the Merchant Taylors Hall, 28 May. He voted against inquiry into delays in chancery, 4 June 1823. He hastened to London ‘in defence of Robinson’s budget’, 2 Mar. 1824, returning to Brighton the following day. He was back in attendance at the end of April, but grew tired of waiting for the warehoused wheat bill to be considered and went home on 15 May. He was present for the debate on the prosecution of the Methodist missionary John Smith in Demerara, 31 May, and voted against inquiry, 11 June. He again divided for the Irish insurrection bill, 14 June. His journey back to Coombe, 17 June 1824, took ‘six hours exactly’. Of the debate on the address, 3 Feb. 1825, he recorded tersely, ‘full House, much speechifying, no amendment’. He voted for the Irish unlawful societies bill, 15 Feb., recovered from illness to divide against Catholic relief, 1 Mar., 21 Apr., and voted against the Irish franchise bill, 26 Apr. He defended lord chancellor Eldon from Brougham’s attack, 18 May, after the Lords had rejected the relief bill.
In September 1825 Shiffner had informed his agent of his determination not to contest Lewes again. His Sussex neighbour John Smith* reckoned him to be a casualty of the uncertainty over the date of the general election, at which he seemed bound to face a contest. In his parting address he declared that the government had ‘carried us triumphantly through times of difficulty and danger’, with such success that ‘individual exertion is not so much called for’.
