Photios I of Constantinople
Leucius, called Leucius Charinus by Photios I of Constantinople in the ninth century, is the name applied to a cycle of what M. R. James termed "Apostolic romances" that seems to have had wide currency long before a selection was read aloud at the Second Council of Nicaea (787) and rejected. Leucius is not among the early heretical teachers mentioned by name in Irenaeus' "Adversus haereses" ("ca." 180). Most of the works seem to have come into existence in the mid-third century.