Peter (Greek: Πέτρος) was a senior Byzantine military commander at the turn of the 9th century, who later became a monk and was canonized by the Church.
[2] Peter was born during the joint reign of Irene of Athens and her son Constantine VI (780–796).
Peter managed to escape "miraculously" through the aid of John the Theologian, became a monk on the Bithynian Olympus, along with Joannicius the Great, with whom he lived together as his disciple for 34 years.
[3][4] After Joannicius' death in 846, Peter returned to Constantinople, where he built a church in the ta Evandrou quarter.
[3] Rodolphe Guilland suggested an identity with a patrikios of the same name, mentioned in the history of Theophanes the Confessor, who participated in the overthrow of Irene in 802, and who in 809 calmed an army mutiny against Nikephoros.