The Constitutional Act of 1791 is introduced by the British House of Commons in London which envisages the separation of Canada into Lower Canada (Quebec) and Upper Canada (Ontario).
From 1896 known as The Clergy Endowments (Canada) Act 1791, the statute passed at Westminster in the 31st year of George III, and itemised as chapter 31 (31 Geo 3 c 31), was commonly known as the Constitutional Act 1791 (French: Acte constitutionnel de 1791). It was an Act of the Parliament of Great Britain.