What is the exact southernmost point in Canada?

Map of U.S. States North of Canada -- I think these are the 27 U.S. states at least partly north of the southernmost part of Canada.

I think the southernmost point of Canada is on a now-uninhabited island called Middle Island, which is part of Pelee Township, Ontario, which should not be confused with the nearby Middle Bass Island, which is part of Ohio. Although always a part of Canada, Middle Island was until 2000 owned by an Ohio car dealer who bought it as a pleasure island for his family. After his death his heirs sold it by outcry auction. A non-profit agency called The Canadian Nature Conservancy, which had publicly raised funds for the purpose, bought it for roughly U$867,000 and then deeded it to Canada. The southernmost point of Middle Island, Ontario, Canada, is located, I think, at 41 degrees north, 41 minutes, 17 seconds.

http://barelybad.com/north_of_canada_map.htm
https://latitude.to/articles-by-country/us/united-states/29235/middle-island-lake-erie

Twenty-seven of the fifty U.S. states have land north of Canada's southernmost point - Middle Island, Ontario.

Middle Island, Ontario, is the southernmost point of land in Canada, located at 41°41'N, 82°41'W, or about 41.7 degrees north latitude. It lies in Lake Erie, just south of Pelee Island, and is part of Point Pelee National Park.

https://en.wikipedia.org/wiki/Middle_Island_%28Ontario%29