The transfer of the relics of Saint Gregory the Theologian
According to some researchers, the uncovering of the relics of Saint Gregory the Theologian (Jan. 25) occurred at Nazianzus during the reign of Emperor Arkadios (395-408), that of Theodosios II (408-450), and that of Emperor Constantine Porphyrogenitos (911 - 959) when they were enshrined in the Church of the Holy Apostles at Constantinople. His honorable head is reverently kept in Vatopedi Monastery on Mount Athos.
Until the year 1204, when the Western Crusaders captured Constantinople, portions of Saint Gregory’s relics were kept in the church of Hagia Sophia, in the church of the Holy Apostles, and in the church of the Holy Resurrection.