Saint Gregory the DecapolitanSt. Gregory the Decapolitan, Romania. Model made for believers in RomaniaSaint Gregory of Decapolis or Gregory the Decapolitan (Greek Όσιος Γρηγοριος ο Δεκαπολίτης; b. before 797 – d. 20 November 842 or earlier) was a 9th-century Byzantine monk known for his travels preaching the faith Christians in the Byzantine world. He is regarded by Christian believers as a miracle worker and is called the New Miracle Worker (in Greek ο νέος θαυματουργός, transliterated: o neos thaumatourgos), and his feast day in the Orthodox Church and the Roman Catholic Church[1] is November 20.