I don't know if you check old posts, but just in case...
Catherine Duffy, daughter of Thomas Duffy and Catherine Corrigan, married Owen Corrigan.
Owen Corrigan and Catherine Duffy ended up in Cleveland, Ohio where they had the following children that I could find.
Owen Corrigan, married Helen Gibson
Thomas Corrigan, b. 1896, d. 1917
Mary C. Corrigan, b. 1894, d. 1919
Catherine Duffy Corrigan died Sep 11, 1928, in Cleveland, Ohio.
Her brother, Michael Duffy was born Nov 1, 1860, and died in Cleveland on Dec 31, 1937.
I don't have any information on her brother, Thomas, who was born Nov 15, 1865.
I believe that their was also a sister, Bridget Duffy, who married Jacob Roddy in New Jersey.