Today is the feast day of St Mark (my name sake). Not much is known about St Mark outside of what we read in the Acts of the Apostles. He was know to be a disciple of Peter and traveled with Paul and Barnabas in Paul's first missionary journey. He also traveled with Peter to Rome and was the first Bishop of Alexandria.
The Gospel written by Mark is the shortest and considered the first of the four. He was martyred in Alexandria in 68 ad.