The only child of his father’s old age, Kensington was an unruly youth, who after his runaway marriage resided in Portugal. In 1801, while serving at Gibraltar, he succeeded his father to the Irish peerage and also to his seat for Haverfordwest, where ‘the memory of the old peer and the tears of his widow’ ensured him the continued goodwill of the corporation, if not of Lord Milford, who was under pressure from Joseph Foster Barham to promote his claims to the seat, and who professed his willingness to vacate the county for Kensington, in exchange for a British peerage. Kensington faced only one actual contest (1812) which was just as well, since he could ill afford the expense.
Kensington, whose father had supported Pitt, at once indicated his independence by making one of the minority of 20 who voted against the peace of Amiens, 14 May 1802.
‘Little Kensington’, as his friend Creevey called him (later it was ‘Og, King of Bashan’),
He voted against the pledge given by the new ministry, 9 Apr., and on 26 June 1807 against the address. He was also in the opposition lobby on Calcraft’s motion, 14 Mar., on Duigenan’s appointment, 11 May 1808, on the convention of Cintra, 21 Feb., and three times on the Duke of York’s alleged misconduct of army patronage, 15, 17 Mar. 1809. On 7 Nov. 1809, Creevey reported that Kensington and John William Ward had dined with him ‘both full of their jokes at the expense of our political leaders’.
Kensington continued to support Catholic relief in the Parliament of 1812, voting for it on 2 Mar. 1813 and 9 May 1817: ‘a violent attack of the gout’ had prevented his voting on 24 May 1813.
In 1818 Kensington lost his seat as the result of a realignment in Pembrokeshire by which he forfeited the backing of Lord Milford and his supposed ambition to come in for the county: he had made frantic efforts in 1816 to prevent the compromise with (Sir) John Owen of Orielton which undermined his position, and found it necessary to assure his friends that he was under no necessity to go abroad.
Kensington was a popular and personable man of imposing presence—he weighed over 17 stone. He showed a keen interest in local affairs, canvassing Pembrokeshire successfully on behalf of the indisposed Lord Milford in 1807 and supporting Cawdor’s son in the county election of 1812. He could never afford to cut the figure he wished to and, having been obliged to let Johnston Hall on a long lease and failed in a bid to buy Joseph Foster Barham’s estate, resided at Westmead in Carmarthenshire,
