Antioch was a chief center of early Christianity during Roman times. The city had a large population of Jewish origin in a quarter called the Kerateion, and so attracted the earliest missionaries. Evangelized, among others, by Peter himself, according to the tradition upon which the Patriarch of Antioch still rests its claim for primacy, and certainly later by Barnabas and Paul during Paul's first missionary journey. Its converts were the first to be called "Christians." This is not to be confused with Antioch in Pisidia, to which the early missionaries later travelled.