Gaius in Fausset's Bible Dictionary

(gay' iuhss) Greek form of Latin name Caius meaning, "I am glad, rejoice." 1. A Macedonian Christian who was one of Paul's traveling companions (Acts 19:29). Along with Aristarchus, he was seized during the riot in Ephesus incited by Demetrius the silversmith. 2. A Christian from Derbe who accompanied Paul the apostle into Asia (Acts 20:4). 3. Paul the apostle's host in Corinth (Romans 16:23). According to 1 Corinthians 1:14, he was one of the individuals in Corinth whom Paul personally had baptized. 4. The Christian John loved and to whom he addressed 3 John (3 John 1:1).