Hello, Wendy. Your posting is a few years old, so I hope this reply reaches you. I am a fairly recent researcher. My great great grandmother was Bridget Fahey, born around 1840 in Ireland. Not sure Where....or who her parents were...or if she had siblings....
She immigrated to USA either before or after she married Thomas McGuire (also born 1840 in Ireland). She died 20 Oct 1892 in NY.
Any chance of a connection?