San Agricio (also known as Agricio de Tréveris or Agritius) (ca. 260 - ca. 329, 333 or 335) was bishop of Trier in the fourth century. A local tradition of the ninth century says he was Patriarch of Antioch. At the request of Empress Helena, mother of Constantine, Pope Sylvester I appointed him bishop of Trier. One of the few proven facts is that San Agricio appeared at the Council of Arles in 314 and signed the acts as bishop of his diocese, and he was granted primacy over all the bishops of Gaul and Germany. Agricio complained about the paganism that was invading the region of Germany, which had been evangelized almost two centuries before, a complaint that continued his successor San Maximino.
St. Athanasius, who came to Trier from exile in 335 or 336, refers to the work of St. Agricole in Trier, where he devoted himself to building churches there and establishing closer relations with the center of Christianity. Saint Helena encouraged him in this task and sent him a part of the precious relics discovered by her in the Holy Land. Thus came to Trier one of the nails of the cross, the knife of the Last Supper, the remains of the Apostle Matthias as well as those of the saints Lazarus and Martha and the Holy Túnica.
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