LOL! What is Roman Catholic? The earliest Apostolic Fathers (i.e. +Ignatius) speak of the catholic church and orthodox faith. The Eastern Church wa slikewise Roman. The Greek side of the Empire considered itself Roman, and the capital of the Roman Empire was even relocated to Constantinople, the New Rome. The Creed does not say "I believe in One Holy Roman Catholic Church" but "in One Holy Catholic and Apostolic Church."
An Apostolic Church eh!.. Which one?.. Peter, Paul, Apollos?