Clement of Alexandria, on 1Pet 5:13

“The church that is in Babylon, elected together with you, saluteth you: and so doth my son Mark.”

“"Marcus, my son, salutes you." Mark, the follower of Peter, while Peter publicly preached the Gospel at Rome before some of Caesar's equites, and adduced many testimonies to Christ, in order that thereby they might be able to commit to memory what was spoken, of what was spoken by Peter, wrote entirely what is called the Gospel according to Mark. As Luke also may be recognised by the style, both to have composed the Acts of the Apostles, and to have translated Paul's Epistle to the Hebrews.”

Imported from an open dataset — not yet checked against the printed edition.