Hello, I'm afraid that I cannot contribute any information about your Mary Beirne. I can tell you, if case there is any connection, that my Beirne family (a.k.a. BERN, BERNE) originated in Boyle, Co. Roscommon. My gr-gr-grandmother was Elizabeth Beirne, dauther of Cecelia Hanley (Hanly) and Thomas Beirne. Elizabeth had a brother named Thomas. That era was the late 1700's into the 1800's. Good luck with your hunt. Fran Weeks Dartmouth, MA