Nunnally Connection - Oglethorpe Co. GA

My ggGrandfather and ggGrandmother, Francis W. Winfrey and Virginia Louisa (Nunnally) Winfrey are buried at Salem Baptist Church cemetery. Virginia Louisa Nunnally b. 13 Nov. 1828; d.6 June 1899. Who are Virginia's parents? Grandparents? Is she connected to the Walton, Clarke, or Banks Co. group(s)? Any help, enlightenment, or references would be greatly appreciated.Richard Greene