Lower Canada Rebellion
When news of the arrest of the Patriote leaders reached Upper Canada, William Lyon Mackenzie launched an armed rebellion in December 1837. In the meantime, filibusters from the United States, the Hunter Patriots, formed a small militia and attacked Windsor, Upper Canada, to support the Canadian Patriots. This resulted in the declaration of martial law by the Lower Canadian government.
Upper Canada
After the Rebellions, the new governor, Charles Poulett Thomson, 1st Baron Sydenham, proved an exemplary Utilitarian, despite his aristocratic pretensions. This combination of free trade and aristocratic pretensions needs to be underscored; although a liberal capitalist, Sydenham was no radical democrat. Sydenham approached the task of implementing those aspects of Durham's report that the colonial office approved of, municipal reform, and the union of the Canadas, with a "campaign of state violence and coercive institutional innovation ... empowered not just by the British state but also by his Benthamite certainties." Like governors Bond Head before him, and Metcalfe after, he was to turn to the Orange Order for often violent support. It was Sydenham who played a critical role in transforming Compact Tories into Conservatives.