From a Scottish landowning family, Stewart, a West India merchant, sat as Liberal MP for Lancaster in the 1830s and Renfrewshire in the 1840s. He was described by The Times as ‘upright, candid, and independent’, and fellow MPs asserted that ‘no other representative from Scotland possessed the same influence’ in the House, aided by Stewart’s ‘affability and good humour, accompanied with an incessant flow of unlaboured wit’.
The Shaw Stewart family had long been settled in Renfrewshire, where Stewart’s father inherited extensive estates (and a baronetcy) in 1812, including considerable property in Greenock. These passed to Stewart’s brother Michael in 1825, as did the plantations in Trinidad and Tobago which their father had developed after switching from the Baltic to the West India trade on Stewart’s advice.
Stewart had, meanwhile, been re-elected unopposed for Lancaster in 1832. Although on the hustings he promised to support ‘measures, and not men’, he endorsed the Grey ministry’s ‘liberal and enlightened principles’. He called for the speedy abolition of the window tax and the ‘taxes on knowledge’, the removal of commercial monopolies and a readjustment of the currency. Striking a self-justificatory note, he described it as ‘his misfortune, not his fault’ to be involved with slavery. While he ‘hated and detested slavery in itself’, he warned of the difficulties of dismantling such a long-established system. Decrying those who courted popularity by advocating immediate abolition, he promised to vote for emancipation once ‘it would be a boon and not a curse’ to the slaves.
Reviewing his first Reformed Parliament, Stewart described himself as ‘generally a supporter’ of Whig ministers, but ‘had given more than one substantial proof of independence, by opposing some of their most favourite measures’.
Stewart’s ‘courteous manners’ secured ‘a patient and attentive hearing’ for his Commons speeches. Relating largely to his own commercial concerns, they were delivered ‘with much fluency and ease’.
Spared a contest in 1835, Stewart expressed his desire to go to Parliament ‘free and unfettered’, although his political sympathies lay with the late Grey ministry. He was scathing about the Tamworth manifesto, describing the Tories as ‘mocking-birds’ copying Whig measures. He reassured his constituents that he would reform but not destroy the Church, applying surplus revenues to supporting and educating the poor.
Increasingly active in the committee-rooms, Stewart chaired the committee on the Ipswich election petition, which also prompted several contributions to debate in 1835, as the Commons dealt with individuals who had absconded to avoid giving evidence.
Stewart made occasional interventions on Scottish questions in this Parliament, but it was commercial and colonial matters which preoccupied him. He downplayed the grievances expressed in petitions from Lower Canada, 9 Mar. 1835, and presented a counter-petition a week later. He spoke in support of Russell’s resolutions on Canadian government, 6 Mar., 14 and 21 Apr. 1837. He continued to be an articulate spokesman for the West India interest, arguing against the equalisation of the sugar duties until the planters had recovered from abolition, 19 June 1835, 22 June 1836. He was also attentive to British mercantile interests elsewhere, warning Lord Palmerston, the foreign secretary, against being too trusting of Russia, whose aggrandisement threatened trade with Turkey, 19 Feb. 1836. One report described this speech as ‘a cruel hit from a zealous and consistent, but independent Whig’.
In 1837 Stewart faced his first contested election at Lancaster. His hustings speech was much applauded, but he finished third in the poll, with the Conservatives taking both seats.
That June Stewart began canvassing in Renfrewshire, which his brother Michael had represented until his death in 1836.
Again active in the committee-rooms, Stewart chaired the committees on the Weymouth and Ipswich election petitions.
Scottish affairs, particularly religious matters, increasingly drew Stewart’s attention, and he spoke fairly often in this Parliament, except in the 1843 session, which he considered ‘dreary’.
Stewart intervened on several other Scottish questions. As chairman of the committee of deputies of joint stock banks, he had lobbied Peel against granting the Bank of England a monopoly over the issue of new banknotes in England and Wales under the 1844 Bank Charter Act.
Fiscal policy also remained a key interest. Speaking on the address, 25 Aug. 1841, Stewart urged that a fixed duty on corn should have a fair trial. After Peel’s ministry took office, he prompted controversy with what The Times condemned as a ‘frothy party harangue’, warning Peel not to prorogue Parliament until action was taken to relieve economic distress, 24 Sept. 1841. Doubts were cast on the veracity of Stewart’s evidence from Renfrewshire,
When it came to the sugar duties, however, Stewart found it difficult to reconcile his free trade views with his commitment to the West India interest, and instead advocated a preferential duty on colonial sugar, 3 June 1842. He urged that as West India proprietors had not received the promised supply of free labour after emancipation, it was unfair to expect them to compete with foreign slave-grown sugar.
Stewart was among the names proposed by Gladstone to serve on a select committee on railways, 6 Feb. 1844, but objections were raised to him and other MPs on the grounds that they were railway directors.
Stewart died in October 1846 at his mother’s residence at Carnock House, Stirlingshire,
