Bowyer was reported to have canvassed Sudbury in 1802 (when still under age), but he did not persevere. In 1807 he declined to stand for Abingdon, professing reluctance to disturb the sitting Member and a distaste for ‘the inconvenience of being representative of a scot and lot borough only a mile or two’ from Radley, but was returned instead, after a contest, for Malmesbury, on the Estcourt interest.
His only recorded votes during the first three sessions of the 1807 Parliament were against the mutiny bill, 14 Mar., for a larger grant to Maynooth, 29 Apr. 1808, and against Perceval’s exculpatory motion on the Duke of York, 17 Mar. 1809. In November 1809 he was asked by leaders of the contending factions at Abingdon to come forward for the current vacancy as a peacemaker candidate and agreed to do so. He vacated Malmesbury and seemed set for a quiet return when an opponent unexpectedly appeared and, by threatening to petition against his alleged infringement of the Treating Act, forced him to substitute his younger brother Henry. Having ascertained that there was no danger of a retrospective petition Bowyer took over the seat in June 1811 and easily retained it against token opposition at the general election of 1812.
On 30 Mar. 1812 Bowyer welcomed the prospect of the accession to the government of Lord Sidmouth, a friend and neighbour, though he stated his uneasiness at the anti-Catholic bias of the proposed new arrangement.
Bowyer voted for Canning’s motion to consider Catholic relief, 22 June 1812, and set out detailed proposals for securing adequate safeguards for the protestant establishment in a treatise published the following year.
Bowyer, whose eldest son and heir became a Catholic in 1850, never mastered his financial difficulties, was outlawed and died at Dresden on 1 July 1860.
