Hieromartyrs Joseph, Metropolitan of Thessaloniki, Dorotheos Proios of Adrianople and Gregory of Derkoi, hanged in Constantinople in 1821.
At the outbreak of the Greek War of Independence in 1821 the Ottoman authorities executed many hierarchs of the Church in Constantinople. Metropolitan Joseph of Thessaloniki, Dorotheos Proios of Adrianople, a noted scholar, and Gregory of Derkoi were among those hanged on 3 June of that year, shortly after the martyrdom of Patriarch Gregory V.
They are honoured by the Church of Greece as hieromartyrs who gave their lives for the faith and their people.
Feast day
On the New Calendar, Joseph of Thessaloniki, Dorotheos of Adrianople and Gregory of Derkoi, Hieromartyrs is commemorated on June 3. Churches on the Old (Julian) Calendar keep the feast on June 16 of the civil calendar.
Also commemorated on June 3

Kevin of Glendalough
Venerable, Κέβιν ο εξ Ιρλανδίας
Venerable Kevin, abbot and founder of the monastery of Glendalough in Ireland.
Name days: Kevin
Achillas of Alexandria
Hierarch, Αχιλλάς
Saint Achillas, Archbishop of Alexandria, successor of the hieromartyr Peter.
Clotilde, Queen of the Franks
Holy Woman, Κλοτίλδη
Righteous Clotilde, queen of the Franks, who brought her husband Clovis to the Christian faith.
Name days: Clotilde