Roman Martyrology-April 4th-on this date in various years-
At Seville in Spain, St. Isidore, bishop, confessor, and doctor of the Church. He was conspicuous for sanctity and learning, and had brightened all Spain by his zeal for the Catholic faith and his observance of Church discipline.
At Milan, the death of St. Ambrose, bishop and confessor, doctor of the Church. By his zeal, besides other monuments to his learning and miracles, almost all Italy returned to the Catholic faith at the time of the Arian heresy. His feast is properly kept on the seventh of December, on which day he became Bishop of Milan.
At Thessalonica, in the time of Emperor Maximian and the govenor Faustinus, the holy martyrs Agathopodes, a deacon, and Theodulus, a lector, who, for the confession of the Catholic faith, had stones tied to their necks and were drowned in the sea.
At Constantinople, the monk St. Plato. For many years he combated with dauntless courage the heretics bent on destroying sacred images.
In Palestine, the anchoret St. Zosimus, who took care of the funeral of St. Mary of Egypt.
At Palermo, St. Benedict of St. Philadelphus, called the Black because of the darkness of his body, a confessor of the Order of Friars Minor. After becoming outstanding for signs and virtues, he went to rest in the Lord, and was enrolled among the saints by Pope Pius VII.
And elsewhere in divers places, many other holy martyrs, confessors, and holy virgins.
R. Thanks be to God.