Alston was a member of the Georgia State House of Representatives. On March 11, 1879, Ed Cox entered the Georgia State Capital building, intent on killing Col. Alston over a business disagreement. Knowing his life was in danger, Alson was given a pistol by a friend for protection. When Cox drew his weapon, they both began firing at each other. Alston was mortally wounded.
Ref: Georgia Division - United Daughters of the Confederacy, Roster of
Confederate Graves, Volume IX - Third Supplemental Volume, Georgia & Other States - (2004), Dekalb County, Georgia - Decatur Cemetery
Robert Augusta Alston, Col -  2nd KY Cavalry (Col. Morgan's) 1832-
11 Mar 1879 - Page 9-49
 Surgeon. Death date also reported as 07 May 1879. Wife: Mary Charlotte Magill. - Page 9-52
9th Tenn. Cavalry