Platon 4 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | M/L VII |
| Dates | 681 (taq) / 681 (tpq) |
| Religion | Christian; Anti-monothelete |
| Locations | Hadrianoupolis (Honorias) (officeplace); Hadrianoupolis (Honorias) (topographical); Constantinople (topographical) |
| Occupation | Bishop |
| Titles | Bishop, Hadrianoupolis (Honorias) (office) |
| Textual Sources | Constantinople, Third Council of (Sixth Ecumenical Council), ed. R. Riedinger, Concilium Universale Constantinopolitanum Tertium, ACO II.2. 1 (Berlin, 1990-1992); also cited from Mansi XI passim (conciliar) |
Platon 4 was the bishop of Hadrianoupolis in Honorias; in 681 he attended the Third Council of Constantinople (the Sixth Ecumenical Council) and was present at the last eight sessions (sessions eleven to eighteen, from 20 March to 16 September): Riedinger II 2. 406-827 (= Mansi XI 460-677). In the subscriptions to the statement of the faith, which condemned mootheletism, and to the Council, he is styled Πλάτων ἐλέει Θεοῦ ἐπίσκοπος Ἁδριανουπόλεως Ὁνωριάδος: Riedinger II 2. 792, line 18, 827, line 23 (= Mansi XI 652, 677). In the lists of those attending each session he is styled Πλάτωνος ἐπισκόπου Ἁδριανουπόλεως: Riedinger II 2. 406, line 17, 520, line 6, etc. (= Mansi XI 460, 521, etc.).
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