St. Eustathios the Confessor, Archbishop of Antioch, Father of the First Ecumenical Council.
St. Eustathios was born in Side of Pamphylia and became Bishop of Beroea and then Archbishop of Antioch. He took a leading part in the First Ecumenical Council at Nicaea in 325, defending the divinity of Christ against Arius.
The Arians later deposed him on false charges and he died in exile in Thrace; his relics were brought back to Antioch with great honour in the fifth century.
Feast day
On the New Calendar, Eustathios of Antioch is commemorated on February 21. Churches on the Old (Julian) Calendar keep the feast on March 6 (a day earlier in leap years) of the civil calendar.
Who celebrates a name day
People with these names keep their name day on this feast:
Efstathios, Eustathios, Stathis, Eustathius, Efstathia, Stathoula
Also commemorated on February 21

John Scholastikos
Hierarch, Ιωάννης ο Σχολαστικός
St. John III Scholastikos, Patriarch of Constantinople, compiler of the canons.
Zacharias of Jerusalem
Hierarch, Ζαχαρίας Ιεροσολύμων
St. Zacharias, Patriarch of Jerusalem, who was led captive to Persia.
George of Amastris
Hierarch, Γεώργιος Αμάστριδος
St. George, Bishop of Amastris on the Black Sea, wonderworker.
Andrew and Anatolios
Venerable, Ανδρέας και Ανατόλιος
Venerable Andrew and Anatolios, disciples of St. Euthymios the Great.