who was the first roman to be baptized
Cornelius the Centurion Cornelius (Greek: Κορνήλιος) was a Roman centurion who is considered by Christians to be one of the first Gentiles to convert to the faith, as related in Acts of the Apostles.
Roman Catholic (term) The term "Roman", as in the "Roman Church", has been used since the Middle Ages – often connoting the local particular church of the Diocese of Rome – the first known occurrence of "Roman Catholic" as a synonym for "Catholic Church" was in communication with the Armenian Apostolic Church in 1208, after the East–West Schism.[3][4]