Laura, If he was moved to Marietta and buried there, most of the graves are marked "unknown". It has been a while since I was there, but best I can remember the cemetery is divided into states. You might try getting in contact with the SCV camp, or the UDC there, just to see if they should have him listed. Alan may be able to answer this question, but since the City of Dalton at the time of this battle was still held by the Confederates, is it possible some of the more seriously wounded from Chickamauga could have been sent there?? If it is possible that he went there, and died, could he be buried in the Confederate Cemetery there?
I know by this time in the war, most of the wounded was sent as far south as LaGrange, but I have never heard where the more seriously wounded might have been sent. Help Alan!