Mark

Mark is the shortest and earliest of the Gospels. Mark (or John Mark, as he is sometimes called) is mentioned in other parts of the New Testament, and was associated with Barnabas and Paul on their first missionary journey. Later on, Mark attached himself to Peter, as interpreter and secretary.

John means “grace and mercy of the Lord,” or “love working by faith.” Mark means “brilliant,” “shining,” “polite.” John Mark had two natures: one, a polite and brilliant exterior; the other, a deep spiritual nature. John Mark represents a combination of the spiritual faculties of zeal and love.
(Source: Fillmore Study Bible, Metaphysical Bible Dictionary)