You have already done quite a bit of work. I hope I can add abit to it.
I found your quesion about Lismonish interesting and I did some tracking down as far as I could. It was almpst certainly a sub-townland of Farrahy. Nowadays many of the sub-townland names have been forgotten. Back in the 1840s they were critical even if they were only a few fields.
It absolutely did exist. there is an account in a Brisbane newspaper of a Maurice Barry from there who became mayor of Brisbane. I also found something about O'Dea;s who talk about Lismonish.
I saw Terence in Griffiths and also in the Tithe Applotments in 1831. here he is located in Ballynoe which can be found on the historic map. My guess is that Lismonish was right there.
I have sent you the files showing what I found.