Here's more of the willful ignorance I alluded to...The first Catholic Church may have been the RCC, or was it the Orthodox church???
Christians who read and believe the scriptures know that the first Christian church founded was a Jewish church, not a Roman church...And it was founded in Jerusalem, Israel...Any 101 Bible student knows that...
Church founded Cacesarea Phillipi by Jesus upon Peter the “rock” upon which Jesus will build his Church. When Peter went to Rome Church moved there also.