In 1862, a man named John Gilleland, from the little Georgia town of Athens, came up with this inventive, some would say crazy, idea for a double-barrel cannon. Gilleland, a local house builder and mechanic, a Jackson County dentist, a private in Mitchell’s Thunderbolts and an employee of Cook’s Armory, thought that a cannon such as this would serve the defences of his community, and the needs of the Confederate Army, very well.