Can't help with the location of the photo. I believe I have the identity have another man :

Thomas Whitfield

Residence Williamson County TN;
Enlisted on 5/15/1861 at Williamson County, TN as a Private.

On 5/15/1861 he mustered into "E" Co. TN 20th Infantry
(date and method of discharge not given)
(Estimated day of enlistment)

He was listed as:
* POW 11/25/1863 Missionary Ridge, TN
* Confined 12/1/1863 Rock Island, IL (Estimated day)
* Oath Allegiance 4/15/1865 Rock Island, IL (Estimated day, released)

Other Information:
born in 1939 in Williamson County, TN
died 7/6/1922 in Williamson County, TN

After the War he lived in Williamson County, TN