Who accompanied Paul on his First Missionary journey?

The person who accompanied Paul on his First Missionary journey was Barnabas. Barnabas was a close friend of Paul and a fellow Christian missionary. According to the book of Acts in the Bible, Barnabas played a significant role in helping Paul establish churches and spread the message of Christianity throughout the Roman Empire. Barnabas and Paul traveled together to several different cities, including Antioch, Iconium, Lystra, and Derbe. They faced many challenges and opposition during their journey, but they continued to preach the gospel and convert many people to Christianity. In summary, Barnabas was Paul's companion on his First Missionary journey, and together they worked tirelessly to spread the word of God and establish Christian communities throughout the ancient world.