The McCarthy name is one of the oldest family names of Ireland. They can trace their history directly back to the third century King of Munster. The name comes fromCarthac a 12th century descendant. The McCarthy’s were prodigious builders and the remains of their castles can be found through out Munster. The favorite McCarthy castle is Blarney, where Cormac McCarthy sent his evasive answers to Queen Elizabeth’s demands for submission.