Leontios 4 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | M/L VII |
| Dates | 681 (taq) / 681 (tpq) |
| PmbZ No. | 4604 |
| Variant Names | Leontius |
| Religion | Christian; Anti-monothelete |
| Locations | Constantinople; Cellae Novae (Monastery of, Rome); Cellae Novae (Monastery of, Rome) (residence); Cellae Novae (Monastery of, Rome) (officeplace) |
| Occupation | Deacon; Monk |
| 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) |
Leontios 4 was a deacon and monk of the monastery of Cellae Novae in Rome; in 681 he attended the final session of the Third Council of Constantinople (the Sixth Ecumenical Council) (on 16 September); in the list of those present at the session he is styled Λεοντίου τοῦ εὐλαβεστάτου διακόνου καὶ μοναχοῦ μονῆς ἐπιλεγομένης Κέλλαι Νόβων, τυγχανούσης ὁμοίως ἐν τῇ αὐτῇ πρεσβυτέρᾳ Ῥωμῃ: Riedinger II 2. 764, lines 17-18: (= Mansi XI 629). Cf. also Leontios 17.
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