They are numbered among the Seventy Disciples of the Lord.
Saint Hermas and Saint Patrobolus are both mentioned by St Paul in Romans 16:4. Saint Hermas became Bishop of Philippi. Some believe him to be the author of The Shepherd, which was so cherished by the early Church that is included in some early versions of the New Testament. Saint Patrobolus became Bishop of Pozzuoli in Italy.
Saint Linus (mentioned in 2 Timothy 4:21) was ordained by St Peter as first Bishop of Rome. He was martyred, perhaps in AD 76.
Saint Gaius (mentioned in Romans 16:23, where we learn that St Paul stayed with him in Corinth), succeeded St Timothy as Bishop of Ephesus.
Saint Philologus (mentioned in Romans 16:15), was made Bishop of Sinope in Pontus by the Apostle Andrew.