GONZALES - Using new DNA technology, deputies positively identified a body that was dumped in an Ascension Parish swamp in 1991. The Ascension Parish Sheriff’s Office said the person had been shot, wrapped in a tarp and left in a ditch before it was found. The John Doe had no identification, and the only thing that was found on the body was an earring made of a baby tooth. Attempts to identify the victim failed until the case was handed to Lt. G…