Under the french Quebec following Richelieu taking power, there are records of English , Indian, and black slaves. See the Historian George Grant for further details. The British were complicated Here is a document with Government correspondence regarding the return of american slaves , laws about candadian slaves, https://ia601702.us.archive.org/24/items/jstor-2713448/2713448.pdf and one which mentions abolition of Indian slaves. http://eco.canadiana.ca/view/oocihm.06673/2?r=0&s=1