Hello, I've been following this thread not because this is my family, but because I have Gleeson family emigrants to Canada who could possibly be connected. I did wonder about a couple of things:
1. Are you certain the place name you're looking for is NAIRN and not NARIN? There is a Narin in County Donegal, Ireland.
2. I searched the Townland Database for 1851 and there is no listing for a townland named NAIRN
3. I did get one hit for a STREET named NAIRN in DUBLIN
3. NAIRN does turn up as an Irish Surname. Have you considered the possibility your listing was intended as a surname, a street name or some other reference?
A few other notes:
1. A HONORA GLEESIN was born on 12 Jun 1815 in TIERSHASHANAHAN, COUNTY KERRY. Her father is listed as Thomas and her mother as Mary Moor, however one of her baptismal sponsors is shown as a MICHAEL REGAN (possibly related to her son-in-law?)
Just a few suggestions for whatever they may be worth. Good luck in your search!
Frances