You might check the Griffith's index on failteromhat.com for civil parishes that had both Carmodys and Courtneys, then convert to the RC parishes on the Irish Times site and see the status of the records. I did a quick search for a marriage of Denis Carmody in Cork on the rootsireland.ie site but they have only north and east Cork (including Mallow) and do not show a marriage around the right time. That suggests they were from south Cork. Good luck! Diane