Lee,

Have you done a search in the Richmond Daily Dispatch? Use "Gary"

I find a number of hits detailing his movements during the winter of 64/65.

Additionally, I have identified Gary as Martin W. Gary, formerly Hampton's Legion, South Carolina. His photo is found in Vol. 10, Photographic History of the Civil War.

George

The Daily Dispatch: March 23, 1865.
Thursday morning

The Hampton Legion.

--This superb command has given to the Confederacy seven generals. Hampton, its originator and colonel, is now a lieutenant-general. Stephen D. Lee, formerly a captain of its artillery, is also a lieutenant general. Butler, a captain, is now a major-general. The lamented Pettigrew, first a private in the Washington infantry, fell at the head of his North Carolina brigade.--Gary, a captain of infantry, is brigadier of cavalry, in command around Richmond. Connor, once a captain, is also a brigadier, minus a leg, and Logan, who started as a lieutenant, has followed the honorable career of his comrades, and received his stars and wreath.--Columbia Carolinian.