When was the first Catholic church built in Rome?
When was the first Catholic church built in Rome? San Giovanni in Laterano St. John Lateran is actually the official cathedral of Rome (not St. Peter's!) and is the seat of the bishop of Rome – a.k.a. the Pope. One of the four major basilicas in Rome, the cathedral was built in the 4th century AD and is believed to be one the first Catholic churches in Rome.
How old is Christianity in Rome?
Rome becomes Christian In 313 CE, the emperor Constantine issued the Edict of Milan, which granted Christianity—as well as most other religions—legal status. While this was an important development in the history of Christianity, it was not a total replacement of traditional Roman beliefs with Christianity.