Jerry Flemming may be able to help you out if you contact him at Jerry_Flemming@savannahga.gov or 912-651-6843 (Bonaventure Cemetery). He's the Director of Cemeteries for Savannah and has helped me out in the past with questions I had about several Confederate graves located in Laurel Grove North Cemetery. I believe he may have a database of all cemeteries located in Savannah. Good Luck!