Main article: Archdiocese of Braga

The tradition that St. Peter of Rates, a disciple of St. James the Great, preached here, is handed down in the ancient Breviary of Braga (Breviarium Bracarense) and in that of Évora; but this, as the Bollandists tell us, is purely traditional. Saint Ovidius is called the third bishop of the city.[1] Paternus was certainly bishop of the see about 390.^[1]

In its early period the Diocese of Braga produced the famous writer Paulus Orosius (fl. 418). At the beginning of the eighteenth century a contest was waged over the birthplace of Orosius, some claiming him for Braga and others for Tarragona. The Marquis of Mondejar, with all the evidence in his favour, supported the claim of Braga; Dalmas, the chronicler of Catalonia, that of Tarragona.