Through the Duke of Cumberland he was given a staff position with General Richard Vyse, but continued to run up heavy debts and make unwise associations.
Patrick Miller, who had ten years before broken with his patron William Douglas, 4th Duke of Queensberry and joined the Whig Club, contacted Charles James Fox about it.
[9] The History of Parliament and a contemporary newspaper account state that Johnstone died on 24 December 1811, the latter giving the place of death as Baker Street, London.
[1][10] According to The History and Antiquities of the Borough and Town of Weymouth and Melcombe (1829) by George Alfred Ellis, Johnstone died of delirium tremens in the House of Commons, on 19 March 1811.
[1] John Malcolm Bulloch in his Gordons of Cluny wrote that Charlotte had been expected to marry James Dalziel of Binns, and that the marriage took place in Edinburgh on 18 May 1805, Johnstone being then a captain.
[12] The couple had one son and two daughters:[1] After Johnstone's death, his estates were put in the hands of trustees (the Duke of Cumberland, Viscount Newark, Masterton Ure and David Cathcart); who also acted as legal guardians to his children.
Charlotte wrote in 1812 to James Brougham, referring particularly to the Weymouth constituency, and explaining that it completely cut out any influence she might have on candidates.