She who is in Babylon, chosen together with you, greets you; and so does Mark, my son.
In this quote Papias refers to “John the elder,” in Against Heresies 5:33:4, Irenaeus says “and these things are borne witness to in writing by Papias, the hearer of John, and a companion of Polycarp.” This implies Papias heard it from John the Apostle. John Mark reworded Peter’s memories and sermons about Jesus into a Gospel. - Utley