Proterius was made a priest by Cyril, bishop of Alexandria, who was well acquainted with his virtues, before he appointed him to preach. On the death of Cyril, the see of Alexandria was filled by Discorus, an inveterate enemy to the memory and family of his predecessor. Being condemned by the council of Chalcedon for having embraced the errors of Eutyches, he was deposed, and Proterius chosen to fill the vacant see, who was approved of by the emperor. This occasioned a dangerous insurrection, for the city of Alexandria was divided into two factions; the one to espouse the cause of the old, and the other of the new prelate. In one of the commotions, the Eutychians determined to wreak their vengeance on Proterius, who fled to the church for sanctuary: but on Good Friday, A.D. 457, a large body of them rushed into the church, and barbarously murdered the prelate; after which they dragged the body through the streets, insulted it, cut it to pieces, burnt it, and scattered the ashes in the air.

Hermenigildus, a Gothic prince, was the eldest son of Leovigildus, a king of the Goths, in Spain. This prince, who was originally an Arian, became a convert to the orthodox faith, by means of his wife Ingonda. When the king heard that his son had changed his religious sentiments, he stripped him of the command at Seville, where he was governor, and threatened to put him to death unless he renounced the faith he had newly embraced. The prince, in order to prevent the execution of his father's menaces, began to put himself into a posture of defence; and many of the orthodox persuasion in Spain declared for him. The king, exasperated at this act of rebellion, began to punish all the orthodox Christians who could be seized by his troops, and thus a very severe persecution commenced: he likewise marched against his son at the head of a very powerful army. The prince took refuge in Seville, from which he fled, and was at length besieged and taken at Asieta. Loaded with chains, he was sent to Seville, and at the feast of Easter refusing to receive the Eucharist from an Arian bishop, the enraged king ordered his guards to cut the prince to pieces, which they punctually performed, April 13, A.D. 586.

Martin, bishop of Rome, was born at Todi, in Italy. He was naturally inclined to virtue, and his parents bestowed on him an admirable education. He opposed the heretics called Monothelites, who were patronized by the emperor Heraclius. Martin was condemned at Constantinople, where he was exposed in the most public places to the ridicule of the people, divested of all episcopal marks of distinction, and treated with the greatest scorn and severity. After lying some months in prison, Martin was sent to an island at some distance, and there cut to pieces, A.D. 655.

John, bishop of Bergamo, in Lombardy, was a learned man, and a good Christian. He did his utmost endeavors to clear the Church from the errors of Arianism, and joining in this holy work with John, bishop of Milan, he was very successful against the heretics, on which account he was assassinated on July 11, A.D. 683.

Killien was born in Ireland, and received from his parents a pious and Christian education. He obtained the Roman pontiff's license to preach to the pagans in Franconia, in Germany. At Wurtzburg he converted Gozbert, the governor, whose example was followed by the greater part of the people in two years after. Persuading Gozbert that his marriage with his brother's widow was sinful, the latter had him beheaded, A.D. 689.