Saint Maximian, Patriarch of Constantinople, successor of the deposed Nestorius.
Maximian was a priest of Constantinople known for his charity, who had used his wealth to build tombs for the poor. After Nestorius was condemned at the Third Ecumenical Council he was chosen patriarch in his place.
He governed the Church in peace for a few years and reposed in the fifth century.
Feast day
On the New Calendar, Maximian of Constantinople is commemorated on April 21. Churches on the Old (Julian) Calendar keep the feast on May 4 of the civil calendar.
Also commemorated on April 21

Anastasios of Antioch
Hierarch, Αναστάσιος
Patriarch of Antioch.
Name days: Tasos, Tassos, Anastasios, Anastasius
Januarius of Benevento and his companions
Hierarch, Ιανουάριος ο Ιερομάρτυς
Hieromartyr Januarius, Bishop of Benevento, with the deacons Proculus, Sosius and Faustus and their companions.
Alexandra the Empress
Holy Woman, Αλεξάνδρα η Βασίλισσα
Holy Martyr Alexandra the Empress, who confessed Christ at the martyrdom of Saint George, with her servants Apollo, Isaacius and Codratus.
Anastasios the Sinaite
Venerable, Αναστάσιος ο Σιναΐτης
Venerable Anastasios the Sinaite, abbot of Mount Sinai and defender of the faith.