Leo 1 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | E IX |
| PmbZ No. | 4436 |
| Religion | Montanist |
| Textual Sources | Peter of Sicily, Historia chreiodes, ed. D. Papachryssanthou, in C. Astruc et al., "Les sources grecques pour l'histoire des Pauliciens d'Asie Mineure", TM 4 (1970), pp. 3-67 (history) |
Leo 1 was a Montanist, to whom the Paulician Sergios 1 once wrote: Peter of Sicily, 166.
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