Apparently CSA Brigadier General Gantt had a change of heart after Island No.10 and before the end of 1863 was active in the unionist movement in Arkansas,helping organize a new state government under President Lincoln's "ten percent" proclamation of Dec.8,1863.Thomas S Staples,"Reconstruction in Arkansas" (New York,1923).
I have a September 16,1861 Confederate Arkansas War Bond issued to E.W.Gantt if you would like a copy.
Mike