POTAMIUS: Bishop of Olisipo (Lisbon), c. 357. According to Hilary, De synodis, xi., the so-called second Sirmian formula of 357 was drawn up by Hosius and Potamius, while Phœcebadius (Contra Arianos, iii.) attributes it to Ursacius, Valens, and Potamius. The Luciferian (of San Lucar de Barrameda, Spain) presbyters Faustinus and Marcellinus (Libellus precum) report that Potamius merely signed the formula. This latter work implies, moreover, that Hosius was cited to appear at Sirmium by Potamius, whom Hosius had denounced to the churches of Spain as a heretic. The Luciferian presbyters just mentioned also say that Potamius originally held the Catholic faith but denied it through-greed for a piece of land, and that he died while on his way to this property. Catholic orthodoxy is shown in a letter of Potamius to Athanasius (written before 357), and he is mentioned, together with Epictetus of Centumcellm, as an opponent of Liberius at Rimini in 359 (MPL, x. 681). In the previous year Pb&oelig:badius had seen in him an opponent who would endeavor to Barry through the formula, and records a letter by him of Patripassian tendency. Potamius was the author of two brief treatises in barbarous Latin, preserved by Zeno of Verona (MPL, viii. 1411-15), De Lazaro and De martyrio Isaiĉ prophets.


BIBLIOGRAPHY: H. Flares, España Sagrada, xiv. 178 sqq., Madrid, 1754 sqq.; P. B. Game, Kirchengeschichte van Spanien, ii. 1, pp. 224-225 231 sqq., 315 sqq., Regensburg, 1864; Ceillier, Auteurs sacrés, iv. 549, v. 152, vi 274; DCB, i··. 448.

POTHINUS (PHOTINUS): Bishop of Lyons; b. 87; d. 177. According to Gallic tradition, he was the first bishop of the see, predecessor of Irenĉus, and he may well have been consecrated before 150. The account of his martyrdom, as given in the letter of the church at Lyons on the persecution under Marcus Aurelius (Eusebius, Hist. eccl., V., i. 29-31), reveals the intensity of feeling which prevailed among both Christians and pagans.


BIBLIOGRAPHY: The " Gallic tradition " appears in Gregory of Tours, Historia Francorum, i. 29, In gloria martyrum, xlviii.-xlix. Consult: Nennder, Christian Church, i. 112, 677; DCB, iv. 449; Schaff, Christian Church, Ii. 55.


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