John, the apostle, son of Zebedee
date - probably A.D. 85-90
target audience - new Christians and seeking new Christians explaining how to find eternal life, to prove conclusively
that Jesus is the Son of God and that all who believe in Him will have that eternal life
Mark, John Mark, not one of the disciples
date - sometime between A.D. 55 and 65
target audience - Gentile Christians especially in Rome, recording Jesus' actions and schievements