Campbell, who came of an old Argyllshire family, was a wealthy Glasgow merchant, closely connected with the Duke of Argyll. In 1708, when he stood unsuccessfully for Glasgow Burghs, the commissioners of customs in Scotland complained to the Treasury in London that as collector of customs for Port Glasgow he was using his influence with the Duke of Argyll and the Duke’s uncle, John Campbell, to bring pressure on them to reinstate two Campbells whom they had dismissed.
Re-elected unopposed in 1722, Campbell lost his popularity in Glasgow on a rumour that he had been responsible for a tightening up of the local customs service, to stop alleged extensive frauds on the revenue by the Glasgow tobacco merchants, which were said to enable them to undersell their English rivals. During the riots at Glasgow against the malt tax in 1725, the fine house which he had built at Shawfield on the outskirts of the town was demolished by the mob, on account of his supposed part in promoting the tax. By a vote of the House of Commons he was awarded £6,080 compensation, which the Government recovered from Glasgow. Immediately after the riots, at which the magistrates were supposed to have connived, he called in a loan of £4,500 which he had made to the town council. In 1727 he sold Shawfield, using his compensation money to buy the islands of Islay and Jura from John Campbell of Calder for £12,000, later re-selling Jura.
raised a mutiny in the town by setting up for themselves and boasting that they had the superior favour with Sir Robert Walpole.
Argyll to Pelham, 26 July 1747, Newcastle (Clumber) mss.
During the Forty-five he raised a militia company, fitting them out lavishly at his own expense. General John Campbell reported of him:
He has been of the utmost service to me in regulating the extravagant demands of others ... I wish the Duke of Argyll would drop him a line of thanks. He deserves it, and wants nothing for himself or family.
J. Fergusson, Argyll in the Forty-five, 59-60.
He died 8 June 1753.
