I checked the regiment's and Company B's Record of Events in the Supplement to the OR and found that Company B was mustered in on April 23, 1864 at Atlanta.
They were stationed at Atlanta on May 1, 1864, at Andersonville, George May 1 to September 1, 1864, and at Camp Lawton September/October 1864
No, I am not a relative
A Goggle Search, "Camp Lawton, Georgia" will yield a number of hits and perhaps list burial locations, note the following:
Union prisoners were transferred from Andersonville Prison to Camp Lawton in Millen after Sherman's attack on Atlanta in 1864. Designed to hold 40,000 inmates, the population of Camp Lawton only reached around 10,000.
The most substantial prison holding former Andersonville captives was Camp Lawton in Millen, about forty miles south of Augusta. Camp Lawton was a stockade structure enclosing forty-two acres, making it the largest civil war prison in terms of area. Set only a mile off the Augusta Railroad, the pen was designed to hold up to 40,000 prisoners, although the population never grew to much beyond 10,000. By all accounts the prison at Millen was infinitely better than Andersonville. A generous spring ran north to south through the site, providing a fresh supply of drinking water. Rations were also more plentiful, since the countryside had yet to be scavenged of its food resources. Yet disease and death were not unknown, because many of the prisoners were terribly debilitated from their incarceration at Andersonville. During the short time the prison was open, from late September to early November 1864, nearly 500 prisoners succumbed to disease.