Hi Hooch
There is a well known family of Flannerys in Mallow who run a quarry, and they have been in the area for quite a few generations. Going back in time, one of them trained as a chemist (early nineteenth century when it was not as apothecary) and is linked to the Flannerys of nearby Churchtown & Rathdrum. Your immediate query would appear to be within the era of civil records and shouldn't be too hard to track down. Have you applied for the usual civil certs yet?
Regards
Lorcán J. O'Flannery