Conversation so far:
Where did Guy Carleton reside post-war?
Quebec
What did Guy Carleton do in Quebec?
Guy Carleton was appointed Governor-in-chief.
Did Guy Carleton do anything notable while Governor-in-chief?
Guy Carleton was mostly ignored.
What did Guy Carleton do after his position as Governor-in-chief?
Guy Carleton was raised to the Peerage in August 1786 as Lord Dorchester, Baron of Dorchester in the County of Oxford.
How long was Guy Carleton in Quebec?
Until 1792

Question: Did he hold any positions after his time in the House of Lords?
Self-contained rewrite: Did Guy Carleton hold any positions after his time in the House of Lords?