October 26 Fast Holy and Glorious Greatmartyr Demetrius the Myrrh-gusher of Thessalonica (ca. 306). . Commemoration of the Great Earthquake at Constantinople in 740 A.D. St. Theóphil of the Kiev Caves, Bishop of Novgorod (Far Caves—1482). Martyr Lupus (ca. 306). Ven. Athanasius of Medikion Monastery (ca. 814). Monk Martyr Joseph of Dionysiou (Mt. Athos—1518). SAINT DEMETRIUS The Great Martyr Demetrius the Myrrh-gusher of Thessalonica was the son of a Roman proconsul