Apparently the Frenchman, Robert Durand, used bottles to preserve food for Napoleon's army (boo, hiss), so we can discount him.
It was an Englishmen, Peter Durand, with a suspiciously French looking surname, who first used tin containers. The system went into commercial production in 1813, just in time for the Battle of Waterloo
Another Briton, Thomas Kensett, emigrated to the US taking the method to New York with him.
Cheers
Steve