Galatians 2:1 (ESV)

1 Then after fourteen years I went up again to Jerusalem with Barnabas, taking Titus along with me.

Titus was a Gentile convert who played a major role in the city of Corinth (2 Corinthians 2:13; 2 Corinthians 7:6, 2 Corinthians 7:13, 2 Corinthians 7:14; 2 Corinthians 8:6 2 Corinthians 8:16, 2 Corinthians 8:23; 2 Corinthians 12:18).1 Paul refers to him as his true son in our common faith (Titus 1:4) and most likely met him during his ministry in Syrian Antioch.