Greet Rufus, chosen in the Lord; also his mother, who has been a mother to me as well.
Romans 16:13 ESV

Rufus is a common Latin name, but there is a Rufus mentioned elsewhere in Scripture. The Gospels tell of how the Roman soldiers forced Simon of Cyrene to carry Yeshua’s cross. Mark 15:21 adds that this Simon was the father of Alexander and Rufus. It seems strange to mention the two sons if Mark didn’t expect that other followers of the Way would know of them. We can’t know for certain that this is the same Rufus, but it seems possible.