Try contacting the 4 Farnan's in the current on line telephone book 3 in Carnaross, Kells 2 in same household, 1 Castlecomer. You might get someone willing to give you a hand. Addresses given are sufficient for mail delivery.
I don't know what your 'clarify details' means but if to do with Parish records there is an Irish History Foundation with records on line.
I'm sure you know most of the resources.www.familysearch.org
has civil registrations from 1864.
Gravestone index, www.from-ireland.net