Ioulianos 13 | Prosopography of the Byzantine Empire |
| Floruit | M VII |
| Dates | 649 (taq) / 649 (tpq) |
| PmbZ No. | 3549 |
| Variant Names | Iulianus |
| Religion | Anti-monothelete |
| Locations | Rome; Horta (Tuscia) (officeplace); Horta (Tuscia) |
| Occupation | Bishop |
| Titles | Bishop, Horta (Tuscia) (office) |
| Textual Sources | Lateran Council = Concilium Lateranense anno 649 celebratum, ed. R. Riedinger, ACO II 1 (Berlin, 1984) (conciliar) |
Ioulianos 13 was bishop of Horta (in Tuscia); he attended all five sessions of the Lateran Council, from 5 October to 31 October 649, and in the list of bishops present is named in ninth place: Conc. Lat., p. 2, line 17 (Ἰουλιανοῦ ἐπισκόπου Ὀρτῶν), p. 3, line 17 ("
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