"The Assembly passed the first Act Against Slavery in the British Empire in 1793, and the English colonists of Upper Canada took pride in this distinction with respect to the French-Canadian populace of Lower Canada. The Upper Canadians valued their common law legal system, as opposed to the code civil of Quebec, which had chafed them ever since 1763. This was one of the primary reasons for the partition of 1791. Simcoe collaborated extensively with his Attorney-General John White on the file.
The principles of the British Constitution do not admit of that slavery which Christianity condemns. The moment I assume the Government of Upper Canada under no modification will I assent to a law that discriminates by dishonest policy between natives of Africa, America, or Europe.Slavery was thus ended in Upper Canada long before it was abolished in the British Empire as a whole. By 1810, there were no slaves in Upper Canada, but the Crown did not abolish slavery throughout the Empire until 1834."
— John Graves Simcoe, Address to the Legislative Assembly