yes, obsession I think is the word.
There are two persons in the british telephone book for Armagh. You could write letters, most living in Ireland don't get why we do this. The addresses are complete with postal codes,neither address had Kilmore in it. Look for addresses in these areas
Cullen, there are 37 listed in the phone book.
Parish Kilmore and Townlands are in both the Civil Registration District/Poor Law Union of Armagh - located within 12 mi. of named town. Also in the Parish of Clonfeacle and Banbridge.
Another source of the lives your ancestors lived would be books. See under counties on Eneclann or Four Courts Press.
Bye now and good luck. Annette