Saint Dionysios, Bishop of Milan, confessor exiled by the Arians.
Dionysios became Bishop of Milan in 351 and at the council held there in 355 refused to condemn Saint Athanasios at the demand of the Arian emperor Constantius. For this he was exiled to Cappadocia, where he died around 360.
His relics were later returned to Milan through the care of Saint Basil the Great and Saint Ambrose.
Feast day
On the New Calendar, Dionysios of Milan is commemorated on May 25. Churches on the Old (Julian) Calendar keep the feast on June 7 of the civil calendar.
Also commemorated on May 25

Third Finding of the Head of John the Baptist
Great Feast, Τρίτη Εύρεσις Κεφαλής Ιωάννου
Third Finding of the Precious Head of John the Baptist.
Olbianos the Venerable
Venerable, Ολβιανός ο Όσιος
Venerable Olbianos, an ascetic who reposed in peace.
Innocent of Kherson
Hierarch, Ιννοκέντιος Χερσώνος
Saint Innocent, Archbishop of Kherson, preacher and defender of Odessa.
Name days: Innokentios, Innocent
Zenobios of Florence
Hierarch, Ζηνόβιος Φλωρεντίας
Saint Zenobios, Bishop of Florence, friend of Saint Ambrose.