Saint Peter was born in Constantinople to wealthy parents. He studied philosophy and various other sciences. He married and inherited the title of patrician.
During the reign of the Empress Irene and her son Constantine, he was appointed commander of the troops in the campaign against the Bulgarians. After the defeat of the Greeks and the death of Emperor Nikephoros, Saint Peter was taken captive and imprisoned. There, Saint John the Theologian appeared to him, miraculously set him free, and helped him travel to Rome.
The saint devoted himself entirely to God. He withdrew to Mount Olympus and became a monk, struggling in ascetic life alongside Saint John of the Ladder. After thirty-four years of ascetic life, he returned to Constantinople, where, after founding a new church, he lived in seclusion in a cell for a eight years.
Saint Peter reposed in peace and was glorified among the saints.
