Demetrius of Tiflis or Demetrio da Tifliz was a 14th-century Christian layman and martyr from Georgia or Armenia.
He is venerated in the Roman Catholic Church as one of the Four Martyrs of Thane, on April 9.
[1] In 1320, Demetrius left Hormuz with the Franciscans Peter of Siena, James of Padua and Thomas of Tolentino and the Dominican Jordan of Sévérac.
Having begun a discussion of religion, the qadi had asked them their opinion of Muhammad and Thomas replied bluntly that he was "the son of perdition and had his place in Hell with the Devil his father".
[6] Some accounts claim they were scourged and tortured before their execution[4] by beheading on April 8, 1321.