Treasury of Scripture Knowledge
So, after thinking things over, he went to the house of Mary, the mother of John surnamed Mark, where a large number of people were assembled, praying.
Having reached Salamis, they began to announce God's Message in the synagogues of the Jews. And they had John as their assistant.
Aristarchus my fellow prisoner sends greeting to you, and so does Barnabas's cousin Mark. You have received instructions as to him; if he comes to you, give him a welcome.
2 Timothy 4:11
Luke is the only friend I now have with me. Call for Mark on your way and bring him with you, for he is a great help to me in my ministry.
and from Mark, Aristarchus, Demas, and Luke, my fellow workers.