 Petrus Siculus

Petrus Siculus or Peter Sikeliotes () was either a monk or a learned nobleman, who in 870 was sent as a legate from the Byzantine emperor Basil I to the Paulician leader Chrysocheir, negotiating for an exchange of prisoners.He stayed in the Paulician city of Tephrike/Tibrica, now Divrigi in Turkey, on the upper Euphrates, for nine months.