Reading from the Synaxarion:

Onesimus the Apostle of the 70

This Apostle, who was from Colossae, was a bond-servant of that Philemon to whom the Apostle Paul addressed his epistle. Onesimus escaped from Philemon and fled to Rome, where he became a disciple of Saint Paul. Saint Paul brought him to the Faith of Christ, and then sent him back to his master, who in turn gave him his freedom and sent him back to Rome again, where he ministered to Saint Paul. Later, he was seized because he was a Christian and was sent to Puteoli, where he was beaten to death with clubs. Saint Onesimus is also commemorated on November 22 with the holy Apostles Philemon, Apphia, and Archippus.