Both Irby W. and William A. Thompson served in Co. K of the 62. This company was raised in Monroe Co.
There is no indication of where they enlisted.
It would be unusual to find parents, wives, et al in CSRs unless they died during the war and claims made for their effects.
The Tennessee Confederate Pension index record these two widows who may have been married to these men:
Eliza, widow of William Thompson, # W6957, Bradley County
Sara Jane, widow of William A. Thompson, # W3853, Clairborne County
George Martin