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.
Lower Canada Rebellion
The rebellion was preceded by nearly three decades of efforts at political reform in Lower Canada, led from the early 1800s by James Stuart and Louis-Joseph Papineau, who formed the Parti Patriote and sought accountability from the elected general assembly and appointed governor of the colony. The appointed legislative council (a type of upper house) was dominated by a small group of businessmen known as the Château Clique, the equivalent of the Family Compact in Upper Canada.