The Apostles Knew Each Other

Jesus Christ (O-33).
John (6-101) a disciple of Jesus Christ.
Clement of Rome a friend of Peter.
Barnabas (40-100) knew John and all 12 of Jesus disciples, and traveled with Saint Paul to evangelize among the gentiles.
Polycarp (70-168) Johns apostle and knew Barnabas.
Justin Myrtyr (100-167) a contemporary of Polycarp.
Irenaeus (138-202) Polycarps apostle and knew Justin Myrtyr.
Tertullian (150-220) a contemporary of Irenaeus.
Hyppolytus (158-240) a contemporary of Tertullian.
Cyprian (200-258) a contemporary of Hyppolytus.
Victorinus (240-303) a contemporary of Cyprian.
Lactantius (242-330) a contemporary of Victorinus.