Gananoque is a town in Ontario, Canada's Leeds and Grenville area. The town had a population of 5,383 year-round residents in the 2021 Canadian Census and summer residents, sometimes called "Islanders," because of the Thousand Islands in the Saint Lawrence River, Gananoque's most important tourist attraction. The Gananoque River flows through the town, and the St. Lawrence River serves as the town's southern boundary. 

Eric Michel

Colonel Joel Stone, who served with the Loyalist militia during the American Revolutionary War, established a settlement in 1789. The land was granted to Col. Stone for use as a mill site.

During the War of 1812, American forces raided the town's government depot to disrupt the British supply flow between Kingston and Montreal. The raiders seized the supplies they found and burned the depot. Within a month of the raid, construction of the Gananoque Blockhouse was started, with completion in 1813. It had an octagonal log parapet containing five guns. The blockhouse was abandoned after the War of 1812 and given to a private landowner.

The blockhouse was quickly repaired in the 1837–38 Patriot War when there were fears American militia forces were planning to attack. The Gananoque Blockhouse stood until 1852.