Hi Gary,
Let's try this again. (I sent you a long reply earlier today and I think it got lost in cyberspace somewhere!)
Glad to hear from you. It would be a hoot if we were long-lost relatives (whom I'm hoping to find as one result of this research.) Unfortunately, I've only just begun visiting the Ireland sites, so don't have a whole lot to offer you.
I did hear from a very nice guy in Australia who offered the following O'Briens/O'Brians in the Tullaghobegley area as listed in Griffith's Valuation from the mid-1800s: Daniel, Denis, Edward, Harry/Henry, James, John, Michael, Patrick and Roger. He also found three women listed as heads of households---Honoria, Mary and Susan---whom he assumed were widows.
Anyhow, I will continue to try and dig up more on these people, and of course will share anything I find.
Where are you anyhow? And where is Coleraine? I'm in the U.S.
Nancy