Art -

Keep the time frame in mind. The 3rd Alabama Cavalry organized about July 1, 1862, Tupelo MS. The 38th Alabama of course organized earlier.

Three companies of the 3rd Alabama Cavalry transferred from Wirt Adams' Mississippi Cavalry. This regiment formed with five companies from Alabama. If I'm not mistaken the company raised by Capt Robins was one of the those released by Wirt Adams.