From "Miscellany of PEI newspapers" on The Island Register website:
Died on the 22nd of June at his residence Mount Stewart in Prince Edward's Island, John Stewart Esq., late Deputy Paymaster General of His Majesty's Forces and Marshall of the Court of Vice Admiralty in the Island of Newfoundland, and for many years Speaker of the House of Assembly, and Receiver General of His Majesty's Quit Rents in the former Island.
This Gentleman was the legal claimant to the ancient Title of the Earls of Orkney; he was closely allied to the Highland Chieftain George Ranald McDonald of the ancient and legitimate race of Clanranald, and was grandson of the late Highland Chieftain Mackinnon of Mackinnon who rallied and fought under the banners of Prince Charles Stewart on the plains of Preston Pans and Culloden in 1745.
John was married three times, firstly in 1780 to Hannah Turner, secondly in 1817 to Mary Ann James, and thirdly in 1832 to Mary Rain.
"To the memory of John Stewart, of Mount Stewart, Esquire, Deputy Paymaster general of H.M. Forces, and collector General of Quit Rents in this Island, who departed this life the 22nd day of June, A.D. 1834, aged 76 years"