Analysis of information sources in references of the Wikipedia article "Duel" in English language version.
They met early the following morning, May 22, at the race track in Verdun. Pistols were raised, but only Sweeney fired. Warde fell, mortally wounded. A farmer witnessing the affair passed a sobbing Sweeney and said, 'You have had a bad beginning to the day.' It was the last fatal duel in Canada.
This was however not the last fatal duel in what is now Canada.