Yes, I am a descendant of the Daniel Sheehan referenced in your posting. Daniel and Bridget Sheehan lived in the small town of Buttevant, which is located halfway between Cork and Limerick.
You mentioned a family home in Northbridge where Daniel is listed as the father-in-law of Thomas Flynn. Does this home go back to the time when Thomas and Mary (and perhaps Daniel) lived?
I was born in Saint Albans Vermont and was raised in Stamford, CT. However, for the past 40 years I have lived just outside of Washington, DC.
Do you know a woman named Marylou Carmichel? I corresponded with her a number of years ago. I believe that she too was a descendant of Thomas Flynn and resided in Rhode Island.