Mure Campbell succeeded to estates heavily encumbered by debts. He nominated as his sole curator, ‘in whom he would find a father and friend’,
I really think ... it’s very much in your power to make yourself and family as considerable in this county [Perthshire] as your friends could wish ... If your inclinations are to push forward in the army, undoubtedly being in Parliament is the only way; and to obtain that I think you have as good a chance, by being laird of Lawers, as Rowallan.
Mure Campbell had little interest in politics, and was not even enrolled as an elector in Ayrshire when, in July 1753, Loudoun put him forward as a candidate at the forthcoming general election.
Loudoun promised Newcastle to be answerable for Mure Campbell’s ‘zeal and firm attachment to the King’.
The quarrel between Argyll and Bute in the last years of George II’s reign had its effect on Mure Campbell’s position in Ayrshire. In the new reign Loudoun was active in negotiating a settlement, of which one condition was that Archibald Montgomerie should represent Ayrshire in the new Parliament. When Argyll’s death on 15 Apr. 1761 led to a re-distribution of family seats, there was a suggestion that Mure Campbell might come in for Glasgow Burghs;
He died 28 Apr. 1786.
