Hi, I have found Fahy's listed in the Ireland address directory as follows:
J Fahy, Newtown, Tulrohan, Claremorris, Co Mayo.
(approx 1 - 2 miles from Lugboy)
P Fahy, Levalleyroe, Claremorris, Co Mayo.
(This is the next townland to Lugboy)(I think this address is wrong)
John & Noreen Fahy, Holywell, Ballyhaunis, Co Mayo.
(approx 3 -4 miles from Lugboy).
You could perhaps write to these paople. A long shot I know, but whoknows will would come of it.