Apostle Gaius is one of the most important people of Ephesus since his name was mentioned in Holy Bible.
Gaius, whose hospitality I and the whole church here enjoy, sends you his greetings. Erastus, who is the city’s director of public works, and our brother Quartus send you their greetings. *Romans 16:23
Gaius became a bishop of Ephesus. Also, he is one of the Seventy Apostles which are considered second important to the twelve original apostles of Jesus Christ.