Back again, but I do have trouble, as I have no personal or indepth knowledge of Ireland. I tried to locate Kerran and conistently meet a brick wall. There is definitely a Kells. The closest parish to Kerran that I can come up with is Templekeeran ( Templekeeran ). Should I suggest that fondness for the locality might have abbreviated this to Keeran?
Kerran is more likely to be a surname, and is related to the Kernan/Mckernan group.
Regarding the 1857 Griffiths valuations, I have revisited the site. However, no luck there, for either Kells or 'Keeran. in fact, over half of the Farleys lived in "Moynalty".
The only link I found was this group of four names
Farley Catherine Golashane Moynalty Meath
Farley Catherine Shancarnan Moynalty Meath
Farley Catherine Newtown Newtown Meath
Farley Catherine Killynan (Cooke) Rathconnell Westmeath
I have provided them, just in case your information eventually gives you a link and have tried to underline Shancarnan, because phonetically it is similar to Keeran . Raveon = Victoria