Here's one little tidbit, the CW Database record his death as Oct. 20, 1860. An obvious typo.
Have you ordered his service record file?
George Martin
Needham H. Temples
Residence Clarke Co. MS;
Enlisted as a Private (date unknown).
"E" Co. MS 37th Infantry
Other Information:
born in 1837
(Son of ?William and Lydia Temples)