These are the two closest I could find in either army.

William T. Earnest

Residence was not listed;
Enlisted on 10/16/1863 at Demopolis, AL as a Private.
On 10/16/1863 he mustered into "G" Co. AL 28th Infantry
He died of disease as POW on 11/28/1863 at Lookout Valley, TN
(Died of meningitis)
He was listed as:
* POW 11/23/1863 Orchard Knob, TN
* Hospitalized 11/24/1863 Lookout Valley, TN (Sick)

Sources used by Historical Data Systems, Inc.:
- Index to Compiled Confederate Military Service Records
- Those Gallant Men of 28th Alabama

His widow A. M. W. Earnest filed claim for the settlement of his effects January 7, 1865
M311: Compiled Service Records of Confederate Soldiers Who Served in Organizations from the State of Alabama

………………

W. T. Earnest, Private, Company K, 2nd Regiment Mississippi and Alabama Cavalry*, enlisted March 1, 1862 at West Point, Ga. for 12 months, discharged by Surgeon Certificate June 26, 1862

* This company was formerly Captain Plackard’s Company, 1st (Beall’s) Battalion Alabama Cavalry

M258: Compiled Service Records of Confederate Soldiers Who Served in Organizations Raised Directly by the Confederate Government.