Baring-Gould’s sources: S. Concord is mentioned in all the Latin Martyrologies. His festival is celebrated at Bispal, in the diocese of Gerona, in Spain, where his body is said to be preserved, on the 2nd Jan. His translation is commemorated on the 4th July. The following is an abridgment of his genuine Acts.

In the reign of the Emperor Marcus Antoninus [Antoninus Pius, Roman emperor 138–161], there raged a violent persecution in the city of Rome. At that time there dwelt in Rome a sub-deacon, named Concordius, whose father was priest of S. Pastor's, Cordianus by name. Concord was brought up by his father in the fear of God, and in the study of Holy Scripture, and he was consecrated sub-deacon by S. Pius, Bishop of Rome. Concord and his father fasted and prayed, and served the Lord instantly in the person of His poor. When the persecution waxed sore, said Concord to his father, "My lord, send me away, I pray thee, to S. Eutyches, that I may dwell with him a few days, until this tyranny be overpast." His father answered, "My son, it is better to stay here that we may be crowned." But Concord said, "Let me go, that I may be crowned where Christ shall bid me be crowned." Then his father sent him away, and Eutyches received him with great joy. With him Concord dwelt for a season, fervent in prayer. And many sick came to them, and were healed in the name of Jesus Christ.

Then, hearing the fame of them, Torquatus, governor of Umbria, residing at Spoleto, sent and had Concord brought before him. To him he said, "What is thy name?" He answered, "I am a Christian." Then, said the Governor, "I asked concerning thee, and not about thy Christ." S. Concord replied, "I have said that I am a Christian, and Christ I confess." The Governor ordered: "Sacrifice to the immortal gods, and I will be to thee a father, and will obtain for thee favour at the hands of the Emperor, and he will exalt thee to be priest of the gods." S. Concord said, "Harken unto me, and sacrifice to the Lord Jesus Christ, and thou shalt escape eternal misery." Then the governor ordered him to be beaten with clubs, and to be cast into prison.

Then, at night, there came to him the blessed Eutyches, with S. Anthymius, the bishop; for Anthymius was a friend of the governor; and he obtained permission of Torquatus to take Concord home with him for a few days. And during these days he ordained him priest, and they watched together in prayer.

And after a time, the governor sent and brought him before him once more and said to him, "What hast thou decided on for thy salvation?" Then Concord said, "Christ is my salvation, to whom daily I offer the sacrifice of praise." Then he was condemned to be hung upon the little horse; and, with a glad countenance, he cried, "Glory be to Thee, Lord Jesus Christ!"

After this torment he was cast into prison, with irons on his hands and neck. And blessed Concord began to sing praise to God in his dungeon, and he said, "Glory be to God on high, and in earth peace to men of good will." Then, that same night, the angel of the Lord stood by him, and said, "Fear not to play the man, I shall be with thee."

And when three days had passed, the governor sent two of his officers, at night, to him with a small image of Jupiter. And they said, "Hear what the governor has ordered; sacrifice to Jupiter or lose thy head." Then the blessed Concord spat in the face of the idol, and said, "Glory be to Thee, Lord Jesus Christ." Then one of the officers smote off his head in the prison. Afterwards, two clerks and certain religious men carried away his body, and buried it not far from the city of Spoleto, where many waters flow forth.