Innes, a wealthy landowner whose fortune may have been derived from trade, was returned for Tain Burghs for the third time in 1820 on the combined interests of James Stewart Mackenzie* of Brahan Castle, a Whig, and the countess of Sutherland and her husband, the Grenvillite 2nd marquess of Stafford.
He divided for Catholic relief, 6 Mar. 1827. He voted against repeal of the Test Acts, 26 Feb., but paired for Catholic claims, 12 May 1828. He divided with the duke of Wellington’s ministry against the motion condemning delays in chancery, 24 Apr. 1828. In February 1829 Planta, the patronage secretary, listed him as likely to be ‘with government’ for Catholic emancipation, and he voted accordingly, 6, 30 Mar. He presented Ross-shire petitions against any alteration to the law of entail in Scotland, 13, 16 Apr. 1829. Surprisingly, the Ultra Tory leader Sir Richard Vyvyan* listed him that autumn as one of those supporters of emancipation whose sentiments towards a putative coalition ministry were ‘unknown’. He divided against the enfranchisement of Birmingham, Leeds and Manchester, 23 Feb., and Jewish emancipation, 17 May 1830. He was granted a month’s leave for urgent private business, 7 Apr., but had returned by the 29th to present petitions from Wick council in favour of the Caithness statute labour bill and from Reay farmers and Caithness proprietors against it. He voted for the grant for South American missions and against abolition of the death penalty for forgery, 7 June 1830. At the dissolution that summer he retired to make way for James Loch, the auditor of Stafford’s estates. However, Stafford, having switched his allegiance to Lord Grey’s ministry, returned Innes for his wife’s ‘pocket’ county of Sutherland at the general election of 1831 as a ‘decided’ supporter of the reform bill and of economy, who hoped that on other issues ‘his opinion ... would be found in unison with the voice of the nation’.
