I do not know if Co "E" of Likens' 35th Texas was the Robertson Cavaliers, but I know Likens' 35th was with Terrell, Buchel, etc in the Red River Campaign.

If you are researching the 35th Texas Cavalry, be careful to note there were two different 35th Texas Cavalry Regiments: one under Ruben Brown and the other under James B. Likens'. The 35th Texas Cavalry under Likens' was in the Red River Campaign.