The Gospel of Mark was evidently Peter’s Gospel as it was recorded by Mark, perhaps not until after the death of Peter, which is according to several of the earliest Church Fathers. I believe that Mark is the John Mark of Acts chapter 12, and the relative of Barnabas whom was also known to Paul. He is not explicitly mentioned in Scripture before Acts chapter 12, although it is suspected by some, including myself, that he may have been the young man who fled naked at the garden of Gethsemane, mentioned in Mark 14:51-52. Mark was with Peter much later in his ministry, which is seen in 1 Peter 5. I also have reason to believe that Peter’s epistles were written after Paul’s arrest, or even after his execution, and for that reason Mark, who was previously summoned to Rome by Paul (2 Tim. 4), may have remained with Peter. Mark was an early disciple, and may even have been one of the 70, especially if that was him at Gethsemane, but he was certainly never one of the twelve. How can I line this up and research it within Logos Bible Software?