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 Rebellion
The Canadian Alliance Society was reborn as the Constitutional Reform Society in 1836, when it was led by the more moderate reformer, Dr William W. Baldwin. The Reformers experienced a disaster at the 1836 elections for the 13th Parliament of Upper Canada, and the Society took its final form as the Toronto Political Union in 1837. It was this group of the disenfranchised that began organizing local "Vigilance Committees" to elect delegates to a so-called Constitutional Convention in July 1837. This became the organizational structure for the Rebellion; most of the rebel organizers were elected Constitutional Convention delegates.