Hi Elizabeth,
That is a frustrating period of time for records.
I presume you have examined every UK census and record for the family to confirm there’s not an extra place name details?
If the family is Catholic, have you combed through the transcriptions of the RC parish records on Rootsireland/Findmypast/Ancestry?
Also worth checking where people called Feen(e)y are located on Griffiths Valuation and the Tithe Applotment books.
