The one card found in his Fold3 file shows he was discharged at Poplar Springs, not Sulphur Springs. I could find no information on a hospital there or of the presence of his regiment.

A. J. Weston, Private, Company G, 1st Mississippi Cavalry, discharged on certificate of disability June 12, 1862, Poplar Springs, Miss.

M269: Compiled Service Records of Confederate Soldiers Who Served in Organizations from the State of Mississippi