Robinson’s father had inherited substantial estates in Northamptonshire and sat for Northampton as a Whig on his own interest, 1774-80. Robinson, who shared his politics and joined Brooks’s, sponsored by the duke of Devonshire, 21 July 1806, sought to emulate him after succeeding him in 1815. That year the Whig William Hanbury, one of the sitting Members for Northampton, announced that he would not stand again. Rumours of a dissolution next year prompted Robinson, who had received an assurance from Hanbury that he would not oppose him, to canvass. Nothing came of this, but at the 1818 general election he came forward, having started an early campaign. After a 13-day poll against two ministerial candidates he was narrowly defeated, finishing 27 votes behind his nearest rival. His petition against the return was unsuccessful.
So strict was he to his parliamentary duties, that he never missed a single day without remaining to vote, or pairing off with an opponent; and he was even so scrupulous that he would not leave the House for a time without having adopted a similar precaution.
Gent. Mag. (1834), i. 226.
He divided for Catholic claims, 28 Feb. 1821, 1 Mar., 21 Apr., 10 May 1825. He voted for making Leeds a scot and lot borough if it got Grampound’s seats, 2 Mar., when he presented a Northamptonshire petition complaining of agricultural distress.
At the 1826 general election Robinson offered again for Northampton. After a violent contest against a Tory and a Whig convert, both of whom, according to Althorp, sought his assistance and feared ‘his joining the other’, he topped the poll, claiming that his victory was clear proof that his constituents were ‘friends to the cause of toleration and religious liberty’.
He presented Northamptonshire petitions for repeal of the Test Acts, 21 Feb., and voted accordingly, 26 Feb. 1828. He presented a constituency petition for religious toleration, 28 Apr., noting that it was signed by five Protestant Dissenting ministers. He presented another from Northampton’s Unitarians for Catholic relief, 12 May, when he voted for that measure. He divided against throwing East Retford’s franchise into its hundred, 21 Mar. He voted for a pivot price of 60s. rather than 64s. for corn imports, 22 Apr., and for a gradual reduction in duty to 10s., 29 Apr. He voted for the Irish assessment of lessors bill, 12 June, against the appointment of a registrar to the archbishop of Canterbury, 16 June, in protest at the use of public money to renovate Buckingham House, 23 June, and against the additional churches bill, 30 June. He divided to reduce the salary of the lieutenant-general of the ordnance, 4 July, against the grant for North American fortifications, 7 July, and for the corporate funds bill, 10 July. He presented Northamptonshire petitions for the abolition of slavery, 8 July 1828. He presented petitions from Northampton’s Baptists and Unitarians for Catholic emancipation, 12 Feb., 3 Mar., and voted thus, 6, 30 Mar. 1829. He divided for Daniel O’Connell to be allowed to take his seat unhindered, 18 May. His only other recorded votes of 1829 were for the transfer of East Retford’s seats to Birmingham, 5 May, against the grant for the marble arch, 25 May, and to reduce the hemp duties, 1 June. He presented a constituency petition for repeal of the corn laws and greater economies in government expenditure, 28 May 1829.
Robinson resumed voting with his usual assiduity during the 1830 session, though he did not vote for Knatchbull’s amendment to the address on the distressed condition of the country, 4 Feb. 1830. That month he contributed £35 to relieve the poor in his constituency.
At the 1830 general election Robinson offered again for Northampton, citing his support for economy and retrenchment, Catholic emancipation and parliamentary reform, and regretting the failure to abolish colonial slavery. After another fierce contest he topped the poll.
At the ensuing general election Robinson, who had been in poor health for some time, apparently considered retiring but was persuaded by Robert Vernon Smith* to offer again as his pro-reform colleague. On the hustings he made much of the king’s support for the bill, castigated boroughmongers and their nominees, who ‘were always ready to vote for the raising of taxes, for it was on the taxes they lived’, speculated that had reform been achieved earlier ‘Mr. Pitt would not have been permitted to have entered into the last war’, and dismissed fears of a reduction in the number of English Members, insisting that there would still be ‘sufficient numbers left to do the business of the House’. Poor health prevented him attending every day, but he headed the poll throughout. A 15-day scrutiny, carried out at a defeated candidate’s request, did not alter the result, and at the declaration Robinson reproved the ‘rump of the Tory party’, claiming that ‘all their trickery had miserably failed’. A petition against his return was not pursued. He attended the county election dinner to celebrate the triumph of Althorp and Lord Milton, 23 May 1831, when he told the gathering that the ‘court flies that had sucked the blood of the country for so long would be swept away’, denounced Wellington’s failure when prime minister to humble Dom Miguel, and condemned the foreign policy pursued by Lord Aberdeen.
Robinson voted for the second reading of the reintroduced reform bill, 6 July, and gave steady support to its details, though he was in the minority for the total disfranchisement of Aldborough, 14 Sept. 1831. He voted with ministers on the Dublin election controversy, 23 Aug. He voted for the passage of the reform bill, 21 Sept., the second reading of the Scottish measure, 23 Sept., and Lord Ebrington’s confidence motion, 10 Oct. He divided for the second reading of the revised reform bill, 17 Dec. 1831, again supported its details, and voted for the third reading, 22 Mar. 1832. He divided for the motion calling on the king to appoint only ministers who would carry the bill unimpaired, 10 May, for the second reading of the Irish measure, 25 May, and against a Conservative amendment to increase Scottish county representation, 1 June. He was listed as one of the stewards for the Northamptonshire reform dinner, 27 June, and although poor health prevented him attending, he sent a letter rejoicing ‘in the triumph of the cause you meet to celebrate’.
In the autumn of 1832 the Northampton Whigs pressed Robinson to stand at the approaching general election. On 10 Nov., however, he notified them that ‘as I have, on account of my health, declined attending any public meeting at Northampton for some time, you will not be surprised at my determining not to undertake the duty of attending the House of Commons in the new Parliament’. At a meeting of the Whig committee, 24 Nov. 1832, a resolution expressing ‘deep regret’ was passed and the chairman described Robinson as ‘the greatest thorn in the flesh of the [Northampton] Tories which they had ever met with’.
