John Mark, often just called Mark, is the author of the gospel of Mark. He was a believer in the early church mentioned directly only in the book of Acts. John Mark is first mentioned as the son of a woman named Mary (Acts 12:12), whose house was being used as a place for believers to gather and pray. Later, Mark is mentioned as a companion of Barnabas and Paul during their travels together (Acts 12:25). John Mark was also Barnabas’ cousin (Colossians 4:10).