In his work De laude sanctorum (Praising the Saints), the bishop of Rouen in France cited well-known towns in which the relics of first martyrs were kept: " Huc accedit quod non minus in partibus, quam in soliditate curatio est. An aliter in Oriente, Constantinopoli, Antiochiae, Thessalonicae, Naiso, Romae in Italiaminseris, porriqunt nedicinami..."