‘A very masterly speaker and able lawyer’, Hume Campbell was returned for his native county of Berwickshire in 1734 as an anti-Walpole Whig. In his first Parliament he ‘trod the same paths of invectives’ against Walpole as his twin brother, Lord Polwarth, and his friend, William Pitt. At the opening of the next Parliament, from which Polwarth, now Earl of Marchmont, was excluded, the Berwickshire election, a double return, was treated as a trial of strength between Walpole and the Opposition.
Their man [Horace Walpole writes] was Hume Campbell, Lord Marchmont’s brother, lately made solicitor to the Prince for being as troublesome, as violent, and almost as able as his brother. They made a great point of it, and gained so many of our votes that at ten at night we were forced to give it up without dividing.
Two days later he spoke in support of the first of the opposition attempts to set up a secret committee to bring charges against Walpole, whom he called a ‘tympany of corruption’. He was included in the opposition list for the secret committee, narrowly failing to be elected to it.
having been engaged to make up a quarrel between his friend, Hume Campbell, and Lord Home, in which the former had kissed the rod ... within a very few days treated the House with bullying the Scotch declaimer.
Walpole, Mems. Geo. II, i. 19; Marchmont Pprs. i. 147.
Two months later he was dismissed by the Prince for attacking Lord Tweeddale, the secretary of state for Scotland, ‘on the Scotch affairs’.
Your Lordship is sensible that Mr. Hume Campbell is very considerable in the House of Commons and of much more weight than any one in the Opposition can be. He is very well disposed to act entirely with us: the only thing he insists on is that a proper regard should be shown, and that immediately, to my Lord Marchmont, his brother, and upon this Mr. Hume Campbell’s concurrence with us will absolutely depend ... Mr. Hume Campbell desired that he [Lord Marchmont] should be of the sixteen peers and have an employment of credit. The only employment likely to be vacant is the first commissioner of police, which Mr. Hume Campbell thought my Lord Marchmont would very readily accept if he could be of the sixteen. But as that is not practicable Mr. Hume Campbell has left it with his brother that if my Lord Marchmont cannot come into Parliament he shall have some employment of more value than the first commissioner of police. The only expedient that has occured to my brother and me is if your Lordship would have the goodness to exchange the register’s office for that of first commissioner of police, in which case care would be taken to have the salary made up to the value of the register’s office.
23 June 1747, Add. 32711, f. 493.
As Lothian ‘peremptorily’ refused the exchange, Marchmont had to content himself with ‘receiving by my brother the price Mr. Pelham thought fit to offer him’, that is the police office, with its salary made up to that of the register’s office, £1,500 a year.
Hume Campbell - it will be right to have him in such a way as not to appear against us, and I suppose it easy to be done.
In Egmont’s lists of persons to receive offices etc. in the next reign, Hume Campbell is put down on 29 Apr. 1749 for a pension of £1,000 a year but in a later list, dated April 1750, he figures as ‘chancellor to the Prince’.
He died 19 July 1760.
