Campbell belonged to a junior branch of the family of the Duke of Argyll, to whom he was attached. Appointed governor of Stirling castle in 1715, he was returned as a Whig for Argyllshire, which he, his father and his grandfather had represented before the Union. He spoke, 22 June 1715, in favour of impeaching the Earl of Strafford, subsequently voting for the septennial bill. After Argyll’s dismissal, Townshend replied through James Stanhope in Hanover (25 Sept./6 Oct. 1716) to an inquiry from Robethon, the King’s private secretary
how Sir James Campbell came not to be turned out of his command in Stirling castle ... His Majesty may remember, that upon his shewing me the list of the Duke of Argyll’s creatures and dependents given him by the Duke of Roxburgh, he was pleased to declare, that such of them against whom the want of zeal or skill in their business could not be objected, should keep their places, and upon my assuring his Majesty there was no objection of that kind against Sir James Campbell, he was pleased to declare he should be continued in his post at Stirling castle.
Coxe, Walpole, ii. 92-93.
Dismissed in the spring of 1717,
