Most of the fight at Devil's Den was carried (on the ANV side) by: 1st Texas, Texas Brigade; 44th and 48th Alabama, Law's brigade; and 2d, 15th, 17th, and 20th Georgia, Benning's brigade.
The NPS's Soldiers and Sailors site lists a Capt. John W. Jones with Co A, 48th Alabama Infantry. This is probably your man.