I believe my great grandfather Edgar Augustine Miller is buried in his family plot in the Mt. Peace Cemetery in Philadelphia, PA. He was a 1st Lt in first Co. E, later Co. D of the 59th VA. Infantry. This is a guess on my part since I have not seen the grave. This information comes from a letter written by him in 1898 while living in Philadelphia. He DOB is 12/9/1842
Also in the same letter it says his father Emanuel Miller died 4 May 1883 is buried in Mt. Peace. He was a financial agent for the Confederate Government and was sent to England to sell cotton bonds. Not sure if you are interested in this but thought I would include it.
If you find any additional information out I would appreciate you letting me know. It would be nice to update what I have.
Sincerely,