Abbot Euthymios and twelve monks of Vatopedi, martyred for resisting the union with Rome.
St. Euthymios was abbot of the Vatopedi Monastery on Mount Athos in the thirteenth century. When the Latinizing party under Michael VIII sought to impose the union with Rome on the Holy Mountain, he and twelve of his monks refused; tradition relates that he was drowned and the others hanged.
They are commemorated on January 4 as confessors of the Orthodox faith.
Feast day
On the New Calendar, Euthymios of Vatopedi and the Twelve Monks is commemorated on January 4. Churches on the Old (Julian) Calendar keep the feast on January 17 of the civil calendar.
Also commemorated on January 4

Synaxis of the Seventy Apostles
Apostle, Εβδομήκοντα Απόστολοι
Joint commemoration of the Seventy Apostles sent out by the Lord.
Apollinaria the Senator's Daughter
Holy Woman, Απολλιναρία
Venerable Apollinaria, who lived in disguise as a monk in the Egyptian desert.
Name days: Apollinaria
Nikephoros the Leper
Venerable, Νικηφόρος ο Λεπρός
Venerable Nikephoros the Leper, a Greek ascetic of the twentieth century who bore leprosy with thanksgiving.
Onouphrios the New of Hilandar
Martyr, Ονούφριος ο Νέος
New Monk-Martyr Onouphrios of Hilandar, martyred on Chios in the nineteenth century.
Theoktistos of Cucomo
Venerable, Θεόκτιστος
Venerable Theoktistos, abbot of the monastery of Cucomo in Sicily.
Name days: Theoktistos, Theoctistus