Hi Margvk. Yes there is record of headstone in the graveyard in clogher in the parish of Clonoulty erected by Mary Cummins, in memory of her father Thomas Keough of Clohane.
There is also a headstone erected by Judith Keough Nodstown, in memory of her husband John Keough died 1848. and her daughter Mrs Johanns Ryan died 1879.
Another headstone to Catherine Keough Nodstown died 1920.
The Catholic Church records for Holycross parish did not start until 1834, It is possible they were from Clonoulty, where records started 1805, plus the mention of Nodstown
in the parish of Boherlahan/Dualla where records started in 1809 could help
Best of luck with your research, let me know if you have any questions.