Patti,
My GGrandfathers name was John Armstrong Thompson.
The information I have on Border's Regmt. is that
Fulcrod's and Border's Battilions where merged and formed Anderson's Regmt Tex Cav on April 27, 1864, then on Feb 3,1865 it was reorgionized and became Border's Regmt Tex Cav. My GGrandfather was in Border's Battilion/Anderson's Regmt since his death date is July 27,1864.
I do not thing Col Jamerson was in Border's Battilion. His was a Tex Reserve unit.
Patti, contact me at spec13fe@yahoo.com and I will send you what I have on my GGrandFather
Mike