Jim, good to hear from you. Tom exchanged some information with my father-in-law a number of years ago and I have that information (my wife is the Clabby). I have never been able to trace the Clabby family back to Ireland based on the brief information Tom provided about Nicholas. Nor have I been able to find Nicholas in the US 1860 census in Connecticut or anywhere else.
Tom provided Bumlin, County Roscommon as Nicholas' birthplace but I can't confirm that. Where is your family from?
Thanks for the post. If you want to communicate outside of ancestry drop the "a" from the end of my user id and add "@comcast.net"
Dan