Conversation so far:
Where did Carleton reside post-war?
He arrived in Quebec on 23 October 1786.
What did he do in Quebec?
he was appointed "Governor-in-chief", with simultaneous appointments as governor of Quebec, New Brunswick, Nova Scotia, and St.
John's Island .

Question: Did he do anything notable while Governor-in-chief?
Self-contained rewrite: Did Guy Carleton do anything notable while Governor-in-chief?