You should check with the Troup County Archives in LaGrange, Georgia. They have obtained an extensive list of soldiers treated in LaGrange from the Samual Stout Collection in Texas.
Your relative may be included in this compulation. There is a Confederate Cemetery in LaGrange with over 300 graves.
Information on the archives:
Troup County Historical Society and Archives
136 Main Street,
P.O. Box 1051
LaGrange, GA 30241.Phone: 706-884-1828;
Email: firstname.lastname@example.orgWebsite: http://www.trouparchives.org
Hope this helps in your search.