User:Iazyges/Constantine (son of Theophilos)

Constantine (Κωνσταντῖνος, between 821/22 and 829 – c.830 or at the latest 835) was a prince of the Byzantine Empire and co-emperor.

History
Constantine was born in the 820s. Constantine was elevated to symbasileis in 830 or 831. Constantine drowned in a palace cistern in 830/831.