Leontios 19 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | L VIII/E IX |
| Variant Names | Leontius |
| Ethnicity | Roman |
| Locations | Rome (residence); Rome; Rome (birthplace) |
| Textual Sources | Liber Pontificalis, ed. L. Duchesne, Le liber pontificalis. Texte, introduction et commentaire, 2 vols. (Paris, 1886-92); re-issued with 3rd vol. by C. Vogel, (Paris, 1955-57) (chronicle) |
Leontios 19 was the father of pope Valentinus (Valentinus 4): Lib. Pont. 102. 1. He was presumably a native of Rome, from the Via Lata, like his son.
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