@rgtaylor61 Wow, what a mess! So regardless of where he was buried, his youngest daughter was born while he was in Andersonville. Based on his pension file the adjutant general and surgeon general seem to tow the official line that he died at Andersonville in September. There is reference to the soldier who was listed as dying at camp Lawton but the surgeon general said he was of the 9th and insists your ancestor died at Andersonville. But wait...there's more...
There is an affadavit of a William B Little who knew him from enlistment and was imprisoned with him at Andersonvile. His claim is that Parris contracted "the Scurvy" at Andersonville, but then both men were transferred to Lawton where Little tended Paris until he was removed from his quarters shortly before Paris died.
Unfortunately, there is nothing definite, but given the opportunity to believe an eyewitness with nothing apparent to gain versus disenfranchised beauracrat(s), I'm strongly leaning towards your ancestor died at Camp Lawton and that he is listed as dying at Andersonville by mistake. Perhaps digging into William B Little will provide more information.