Saint Paul of Xeropotamou, in the world Procopius, was the son of the Byzanatine Emperor Michael Kuropalatos, who later resigned the imperial office and became a monk in a monastery he built. Having received the finest education, Procopius became one of the most learned men of his time. His "Discourse on the Entrance of the Most Holy Theotokos into the Temple," the "Canon to the Forty Martyrs", the "Canon to the Venerable Cross" and other works gained him great renown. But worldly knowledge and honors did not interest him. He exchanged his fine garb for beggar's rags, and he went to the Holy Mountain [Athos], to Xeropotamou. He built a cell there at the ruins of an old monastery founded by the empress Pulcheria in honor of the Forty Martyrs (March 9). From Cosmas, a hermit, he received monastic tonsure with the name Paul.
Out of humility the saint did not reveal his erudition to anyone. The fame of Paul's strict life quickly spread throughout the Holy Mountain. He became called Paul of Xeropotamou, and the monastery where he pursued monasticism, to the present day bears the name Xeropotamou ("dry river").
At that time the emperor Romanus, a relative of Paul, ascended the throne. Through the Protos of the Holy Mountain he requested the saint to come to Constantinople and planned a splendid reception for him. The humble Paul, not betraying his monastic duty, appeared with a cross and in torn robes amid the courtly splendor and magnificence. St Paul confirmed his fame as a chosen one of God, miraculously healing the grievously ill Romanus by placing his hand on him. But the vanity of courtly life, promised by the gratitude of the emperor, did not interest the saint; he returned to the Holy Mountain, having asked one favor of the emperor: to restore the Xeropotamou monastery.
In the holy altar in the consecrated cathedral church of the restored monastery, was put a piece of the Venerable Wood of the Life-Creating Cross of the Lord, given to St Paul by the emperor Romanus.
Soon the Xeropotamou monastery was filled by a throng of monks, wanting to put themselves under the guidance of the holy ascetic, but St Paul, having entrusted the rule of the monastery to one of the brethren, moved off to the remote wilderness. His quiet was again disturbed by disciples, not wanting to leave their Elder. Then the monk requested of the emperor the means for the building of a new monastery. Thus the saint founded a monastery in the name of the holy Great Martyr and Victory-Bearer St George. The first head of the new monastery was St Paul himself, who also brought a piece of the Venerable Wood of the Cross of the Lord there.
Having been informed in advance by the Lord of his impending end, the saint summoned the brethren of the Xeropotamou and the new Georgikos monasteries and gave them his final instructions. On the day of his death, St Paul donned the mantle, and read the prayer of St Joannicius, which he said continually: "My hope is the Father, my refuge is the Son, my protection is the Holy Spirit, O Holy Trinity, glory to Thee," and he received the Holy Mysteries of Christ.
St Paul had instructed in his will to bury his body on the peninsula of Pongosa (opposite the Holy Mountain). But by the will of God the ship was driven to the shores of Constantinople, where the Emperor and Patriarch with the pious took the body of the saint and solemnly placed it in the Great Church (Hagia Sophia). After the sacking of Constantinople by the Crusaders, the relics of St Paul were transferred to Venice.