Name: Joseph Mason
RESIDENCE: Hancock County, Georgia
Enlistment Date: 15 Jul 1861
Side Served: Confederacy
State Served: Georgia
Service Record: Enlisted as a Private on 15 July 1861.
Enlisted in Company K, 15th Infantry Regiment Georgia on 15 Jul 1861.
Died Company K, 15th Infantry Regiment Georgia on 15 Jan 1862 at Richmond, VA.
Others that fit the profile are:
James J. Mason
James F Mathis [aka James F Matthews]
J E Medlock [aka James Medlock]
J D Middlbrooks
James T. Middlesbrooks
But I don't see any indication they died in service.