New Martyr Andreas Argentis of Chios, beheaded in Constantinople.
Andreas Argentis was a Christian of Chios who, tradition relates, was accused of insulting Islam while in Constantinople and, refusing to convert to save his life, was beheaded in 1465.
He is honored among the early New Martyrs of the Ottoman period.
Feast day
On the New Calendar, Andreas Argentis is commemorated on May 29. Churches on the Old (Julian) Calendar keep the feast on June 11 of the civil calendar.
Also commemorated on May 29

Theodosia of Tyre
Holy Woman, Θεοδοσία η Παρθένος
Virgin Martyr Theodosia of Tyre, drowned at Caesarea for her faith.
Alexander of Alexandria
Hierarch, Αλέξανδρος Αλεξανδρείας
Saint Alexander, Patriarch of Alexandria, who first condemned Arius.
Hypomone the Righteous
Holy Woman, Υπομονή
Venerable Hypomone, the Empress Helen Dragas, mother of the last Emperor of Constantinople.
Fall of Constantinople
Saint, Άλωσις της Κωνσταντινουπόλεως
Memorial of the fall of Constantinople to the Ottoman Turks in 1453.
John Nannos of Thessalonica
Martyr, Ιωάννης ο Νάννος
New Martyr John Nannos of Thessalonica, beheaded at Smyrna.