Mary Anne, perhaps we could continue the conversation using email? I am happy to work on these boards or email, but sometimes it's easier to use email instead of having to sign into a web site. My email address is firstname.lastname@example.org
You asked if I had William Kennedy and Joanna Coughlan in my tree. The quick answer is "yes." I have been working with someone who traces more directly to this line than I do. She then wanted to spend time working on a different family, but for a while we worked intensely on putting this family together. Trying to figure out the Kennedy line is a real challenge. My great-great-grandmother, Margaret Kennedy, married Denis Carroll in RC Kildorrery in 1813. She was from Ballyshonack, which is in the RC parish of Kildorrery and the civil parish of Farahy. There is a townland that is contiguous to Ballyshonack - Tankardstown - which is also in Farahy civil parish. Someone told me there is no physical boundary between the two townlands right now. Also, looking at land records, I could see that there were times when the head of household in Ballyshonack was the same as the head of household in Tankardstown. I am wondering if, at one time, there was one large Kennedy lot that straddled both townland lines. We first tried to see if William Kennedy and Joanna Coughlan were from Ballyshonack (or if William was). We came to the conclusion that he was probably born in Ballyshonack. I need to look again at my notes, but I think we have hypothesized that William and my gggrandmother Margaret were probably siblings.
You asked if I thought Arthur Kennedy was the son of William Kennedy and Joanna Coughlan. The answer is "yes." I think but do not have paper work to prove that William was Arthur's father. I have listed 11 reasons why I came to that conclusion, which I can share in an email. I actually have a DNA match on Ancestry to a descenant of this line.
You mentioned Catherine Keys as either the wife of Arthur Kennedy or of Arthur Coughlan. I know that Catherine married Arthur Kennedy in 1842. When did Catherine marry Arthur Coughlan?
Let me send this off and we can go from here. Jan