There is evidence going back to antiquity of the circulation of Appollinarian texts under the name of characters of proven faith, whose writings or biographical events could somehow justify this attribution (Leontius of Byzantium, Adversus frauds Apollinaristarum; PG 86b.1948.A–B; 1969.A–B; 1973.C; Caspari, 1879, 120–123; Voisin, 1901, 152–161; Capone, 2013, 315–317). Among them is Pope Julius I (337–352 CE), defender of Athanasius of Alexandria against the party of Eusebius of Nicomedia (Studer, 2007, 2317–2318). T…