Hi Donna, Thanks for your message. I know of a Bridget Regan who immigrated from Cape Clear to Boston, Mass in 1902. Her parents were John Regan & Katherine Sheehan. I don't know who Katherine's parents were.
My Joseph & Margaret (Cadigan, I think) Sheehan went to Canada in 1825 and I don't know any of their siblings.
Would enjoy talking with Patrick Sheehan. Send his email if you can. My email is firstname.lastname@example.org