Bunnahabhain , that would be Lord Durham, known in England as Radical Jack. His report brought about democratic government to Upper Canada (Ontario) and Lower Canada (Quebec) and led to amalgamation with Nova Scotia and New Brunswick to give birth to the Dominion of Canada in 1867.
Other colonies and territories joined later; Newfoundland being the last in 1949.
Nova Scotia came very close to declining the invitation to join, as it had declined to join the rebelling colonies nearly a century earlier. Ironic in that the main reason was that Nova Scotia's ecomomy was much more closely tied to the USA than it was to Upper Canada. It was also the most prosperous of the colonies that had remained British. Under confederation that prosperity was lost because trade routes change from the sea to the land.