Barbara,
Your 30 year quest will soon be over. Alan can obtain these records for you. See his advertisement at the top of this page and in his response to you.
For a thumbnail of Llewellyn's service, I offer:
Llewellyn Frame
Residence was not listed;
Enlisted as a Private (date unknown).
"M" Co. VA 14th Cavalry
He was listed as:
* POW 11/26/1862 Greenbrier County, WV
* Confined 11/29/1862 Wheeling, WV (Estimated day)
* Confined 12/5/1862 Camp Chase, OH (Estimated day)
* Confined 2/28/1863 Cairo, IL (Estimated day)
He was described at enlistment as:
5' 11", dark complexion, blue eyes, dark hair
Other Information:
born in 1825