Captain Bennet, who was on active service in the frigate Tribune, owed his seat in Parliament to the fact that he was the Duchess of Northumberland’s nephew. The duke brought him in for Launceston in 1802. Bennet made little mark in Parliament. A friend of Samuel Whitbread, he wrote to him from Jamaica, 14 May 1801, to express his satisfaction that Whitbread had given up secession, ‘a childish unworthy proceeding’ and ‘an unpopular measure’. He added that ‘Your being allowed to do it proved plainly that the state of the representation is worse than you reformers make it’. In July 1802 he informed Whitbread that he was glad Burdett was losing the Middlesex election as, now that war was over, he would prefer that ‘the interior remained quiet’.
In any case, he gave up his seat at the dissolution of 1806 to allow his patron to bring in his heir, though he wished to be in Parliament. When in December Lord Grenville was anxious to effect a reconciliation with the duke, the latter’s agent, Richard Wilson, reported that ‘if we could have a seat for Captain Bennet ... on reasonable terms I think that part of the wound would be effectually healed’ and the duke was prepared to purchase one.
Until late in 1810 he was inactive in the House and presumably at sea, though the Whigs were ‘hopeful’ of his support: they could not be sure of him until the Regency crisis, November 1810-January 1811. He voted for Catholic relief, 31 May 1811, and for Morpeth’s critical motion on Ireland, 4 Feb., as well as for Brougham’s on the droits of Admiralty, 21 Jan. 1812. He had introduced on 9 Apr. and 12 June 1811 unsuccessful motions to secure the payment of naval officers serving abroad who, he said, lost by the rate of exchange: they should, like the army, be able to allot part of their pay to their families. He claimed to have had conferences with the Admiralty on the subject and denied that he was courting popularity.
Since 24 Feb. 1812, when Bennet voted for Bankes’s motion against McMahon’s sinecure office, the Duke of Northumberland had become a supporter of administration and Bennet’s continuing to espouse opposition motions, such as Turton’s, 27 Feb., and Brougham’s on the orders in council, 3 Apr., irritated him, as he was eager to make a show of support to the Prince Regent. On the day Bennet voted for Catholic relief, 24 Apr., the duke wrote to the Regent’s secretary McMahon, ‘Captain Bennet is going to apply for the Chiltern Hundreds, and Raine will come in for Launceston, so that I hope we shall be all right at last’. This does not state explicitly that Bennet was deprived of his seat by the duke for his political conduct, but in view of the way that Raine was lectured on the subject soon afterwards, it is difficult to avoid the conclusion and the duke more or less admitted it in a letter of 16 June.
