Parish of KILMORE, Diocese of FERNS

I have certificate of my wife's grandFather, NICHOLAS WALSH, who was baptised on 8 March 1865, at the "Parish of KILMORE in the Diocese of FRENS.

Can anyone tell me more about the Parish of KILMORE and where the records might now be.This might help us to find out more about a brother that NICHOLAS had.It might also help with the fact that the boys were brought up as orphans
Any help would be appreciated
Peter Collins
Cheltenham UK