Jameson – along with a few other Irish whiskeys – are produced at Midleton, County Cork and are known as “Catholic.” Bushmills, on the other hand, is produced in Northern Ireland, and is typically christened “Protestant.” The surprising thing here is that most Bushmills products make use of Midleton grain whiskey and both of these Irish companies have foreign ownership, i.e. Casa Cuervo as well as Pernod Ricard respectively.