Asked in New Testament
Were the writers of the Gospels of Matthew and John two of the original apostles?
Yes. Though they do not name themselves, a close read of each Gospel holds enough clues to fully suggest they wrote each of their works as modern scholars who comprise the New King James Study Bible, etals, agree. Hence this basic assumption has been consistent since the early centuries A.D..
The New Testament gospels were all written anonymously. During
the second century, the Church Fathers attributed each of the
gospels to the apostle they thought most likely to have written
each, attributing to the disciples Matthew and John the gospels
that now bear their names. However, biblical scholars say that the
gospels could not have been written by eyewitnesses to the events
We do not know who the authors really were, but it seems unlikely that any of Jesus' apostles would need to copy material from Mark's Gospel, as we now know they did.