Do you know Catherine Kilkenny's parent's names? There was a Catherine Kilkenny that was born in 1841 and died 1923. her parents were John Kilkenny and Mary Donohue. You can see the death certificate at family search. It is free to join. Hope this link works, you should be able to cut and paste.
https://www.familysearch.org/search/recordDetails/show?uri=h...