Theophylaktos 18 was bishop of Charioupolis (?in Europa); in 787 he attended the Second Council of Nikaia (the Seventh Ecumenical Council) and was probably present at all eight sessions, from 24 September to 23 November 787: Mansi XII 995-XIII 486. In the lists of those present at the first and seventh sessions he is styled Θεοφυλάκτου ἐπίσκοπου Χαριουπόλεως: Mansi XII 995, XIII 368 (called Θεοφίλου at 368 but the Latin version, at XIII 367, reads: "Theophylacto episcopo Chariupoleos"). Elsewhere he is styled Θεοφύλακτος ὁ ὁσιώτατος ἐπίσκοπος Χαριουπόλεως or similar: Mansi XII 1099, XIII 144, XIII 388 (where his see is called Χαριτοπόλεως/"Charitopolis" in both the Greek and the Latin versions, at XIII 388 and XIII 387). At the second session he supported the traditional veneration of icons as described in statements from pope Hadrian I (Hadrianos 1) and condemned iconoclasts: Mansi XII 1099. At the fourth session he subscribed the statements read out from the Fathers in support of the veneration of icons: Mansi XIII 144. At the seventh session he subscribed the statement of the faith adopted by the Council: Mansi XIII 388.

(Publishable link for this person: )