Canadian journalist and politician William Lyon Mackenzie calls for a rebellion against the United Kingdom in his essay "To the People of Upper Canada", published in his newspaper The Constitution.

William Lyon Mackenzie was a Scottish-born Canadian-American journalist and politician. He founded newspapers critical of the Family Compact, a term used to identify the establishment of Upper Canada. He represented York County in the Legislative Assembly of Upper Canada and aligned with Reformers. He led the rebels in the Upper Canada Rebellion; after its defeat, he unsuccessfully rallied American support for an invasion of Upper Canada as part of the Patriot War. Although popular for criticising government officials, he failed to implement most of his policy objectives. He is one of the most recognizable Reformers of the early 19th century.

The Upper Canada Rebellion was an insurrection against the oligarchic government of the British colony of Upper Canada in December 1837. While public grievances had existed for years, it was the rebellion in Lower Canada, which started the previous month, that emboldened rebels in Upper Canada to revolt.

The Province of Upper Canada was a part of British Canada established in 1791 by the Kingdom of Great Britain, to govern the central third of the lands in British North America, formerly part of the Province of Quebec since 1763. Upper Canada included all of modern-day Southern Ontario and all those areas of Northern Ontario in the Pays d'en Haut which had formed part of New France, essentially the watersheds of the Ottawa River or Lakes Huron and Superior, excluding any lands within the watershed of Hudson Bay. The "upper" prefix in the name reflects its geographic position along the Great Lakes, mostly above the headwaters of the Saint Lawrence River, contrasted with Lower Canada to the northeast.

November 22 is the 326th day of the year in the Gregorian calendar; 39 days remain until the end of the year.