I don't really know enough to be able to help you find your ancestors, but I can tell you that Creedon is a very prevalent name in that area. The village of Inchigeelah, about 16 miles from Ballyvourney, is home to a family of Creedons who own the local hotel and who are also quite an influential family in Cork City itself, being the proprietors of a well known shop called 'Inchigeelah Dairies'. Conal Creedon, of that family is a playwright growing in stature and other members of the family are heavily involved in culture and the arts. Having said all that, the family is a very ordinary one- just an intelligent lot! I don't know if there is any connection with your Creedon, but certainly Inchigeelah and Ballyvourney have a lot of contact with each other.