I'm seeking information for my gg granddad, Isaac Alexander Talley Wright (also known as Isaac Edward Wright) who served in Borders Calvary/Texas. He and his brother Christopher Columbus "Lum" Wright were in the same unit. I went to the NARA here in Fort Worth and found info on CC Wright but can't find the service for my great granddad. He survived the war, died later. His widow, Martha Ellen Henderson Wright, filed for pension and it was approved but she died before she got it. I need help locating the records of my g granddad.

Thank you,

Dorthy Kilgore Casten