St. James, Bishop of Nisibis, father of the Council of Nicaea.
St. James of Nisibis was a hermit who was made bishop of that city in the fourth century. He attended the First Ecumenical Council at Nicaea and, tradition relates, delivered Nisibis from a Persian siege by his prayers. St. Ephrem the Syrian was his disciple.
He reposed in peace and is commemorated on January 13.
Feast day
On the New Calendar, James of Nisibis is commemorated on January 13. Churches on the Old (Julian) Calendar keep the feast on January 26 of the civil calendar.
Also commemorated on January 13

Stratonikos the Martyr
Martyr, Στρατόνικος
Holy Martyr Stratonikos, who suffered with St. Hermylos at Singidunum.
Name days: Stratonikos, Stratonicus
Maximos Kavsokalyvites
Venerable, Μάξιμος ο Καυσοκαλύβης
Venerable Maximos the Hut-Burner of Mount Athos.
Jeremiah I of Constantinople
Hierarch, Ιερεμίας Α΄
St. Jeremiah I, Patriarch of Constantinople in the sixteenth century.
Hilary of Poitiers
Hierarch, Ιλάριος
St. Hilary, Bishop of Poitiers, defender of the Nicene faith in the West.