Why Was the Gospel of Mark Attributed to Mark?

I come now – at *last*, you might say – to the final post in this thread dealing with how the Gospels of the New Testament came to be named Matthew, Mark, Luke, and John. I have covered a lot of territory in this thread, arguing that the Gospels were not known by these names until near the end of the second century; that they probably acquired their names because of an edition of the Gospels produced in Rome sometime after the time of Justin Martyr (mid second century), an edition that influe...