18 April / 1 May
He was a disciple of St Gregory of Decapolis. In the time of the iconoclast heresy, the Emperor Leo the Armenian put John to torture, together with his teacher, Gregory, and Joseph the Hymnographer. When Gregory finished his earthly course, John became abbot of the Decapolite monastery in Constantinople. Becoming abbot, he intensified his asceticism for the sake of the Kingdom of God. He died peacefully in about 820. After his death, St Joseph buried him near the grave of St Gregory.
He was born in Ioannina, once the capitol city of the Emperor Pyrrhus. When his impoverished parents died, the young John moved to Constantinople and there continued his occupation, for he was a craftsman. Not long before that, the Turks surrounded Constantinople and many Christians, out of fear, denied Christ and embraced the Islamic faith. St. John had his workshop in the midst of these converts to Islam. The more the young John burned with love for Christ the Lord, the more openly he exposed himself as a Christian before these traitors of Christ. He began to argue with them about faith and, finally, rebuked them for their betrayal of Christ. They dragged him before the judge and falsely accused John, alleging that he had earlier embraced Islam, and that he again reverted to Christianity. After he was tortured and beaten with rods and iron ramrods, they cast him into prison. The next day was the Feast of the Resurrection of Christ and, again, they brought him out for further torture and John emerged singing: "Christ is risen from the dead!" To his torturers, he bravely said: " Do what you want in order to send me as soon as possible from this transient life to eternal life. I am Christ's slave, I follow Christ, for Christ I die that I may live with Him!" After that, John was bound in chains and brought to the place of burning. Upon seeing a large fire prepared for him, John ran and leaped into the flames. His torturers seeing how he loved death in the fire removed him from the fire and sentenced him to be beheaded. After they beheaded him, they threw his head and body into the fire. Later on, Christians leafed through the ashes and gathered some of the remains of his honourable and wonder-working relics and interred them in the Great Church [Agia Sophia - Church of the Holy Wisdom] in Constantinople. Thus, St. John of Ioannina died a martyr's death and received the glorious martyr's wreath on April 18, 1526 A. D..
On the same day: The Holy Martyrs Victor, Zoticus, Zeno, Acyndinus and Severian; New Martyr Priests Nicholas (1937) and Basil (Derzhavin) (1930) and lay people of the city of Gorodets, Nizhni-Novgorod