Orionthehunter:
Another irony in addition to the fact that Paul feels a need to let people know that Linus and his mother Claudia send greetings so they must be people with whom the readers are familiar and respect. Kinda like when our Bishop returned from his regular meeting with the Pope and communicated greetings from the Holy Father?

Like St. Peter sending greetings from Babylon.
And isn’t it interesting that we see in Colossians 4:10 that Mark was with St. Paul in Rome, and we also have St. Peter writing in 1 Pet. 5:13 that Mark is with him “in Babylon”: “The chosen one * at Babylon sends you greetings, as does Mark, my son.”
Now, where is “Babylon”? Well, we know that this isn’t the actual Babylon, since it was in ruins in the 1st century. So, which city is Peter calling by this code name?
Most anti-Catholics have no problem with John’s use of the word “Babylon” to represent the city of Rome, yet go through all sorts of contortion to deny St. Peter’s presence there. (conf. Rev. 14:8; 16:19; 17:5; 18:2 & 10, and 18:21.)
So, “Babylon” was the code name for Rome; and we know that early Christians used code names for certain cities (e.g., Rev. 11:8).Therefore, where is Peter in 1 Peter 5:13? From where does he write to the churches of “Pontus, Galatia, Cappadocia, Asia, and Bithynia”? From where does he pen such a catholic letter?
And as for Peter’s activities in Rome, we do have historical evidence for this, and from people who knew the Apostles. For example, in A.D. 110, St. Ignatius of Antioch, who was the disciple of the Apostle John, writes to the Roman church, saying: “Not as Peter and Paul did do I command you. They were Apostles, and I am merely a convict.” (Epistle to the Romans, 4:3).
Similarly, a generation later, we have bishop Dionysius of Corinth writing to Soter, bishop of Rome, saying:
“You have also, by your very admonition, brought together the planting that was first made by Peter and Paul at Rome and Corinth; for both of them alike planted in our Corinth and taught us; and both alike, teaching similarly in Italy, suffered martyrdom at the same time.” (Epistle to Pope Soter of Rome, in a from Eusebius, History of the Church, 2, 25:8).
Well, I guess both the Romans and the Corinthians deceived.

*