Jackson was my ancestor's neighbor in SW Arkansas and they enlisted in the same Co.

Jackson, Nathan F - Private—Enlisted in Co. C, 6th Arkansas Cavalry, at Washington, Arkansas, March 20, 1863; present, April 30, 1863; present, June 30, 1863; present, February 29, 1864; no further record; also listed as N. S. Jackson. (from the AR Civil War message board)

I will share with you what I have on this company if you email me at ecrard@cox.net