Titus in Fausset's Bible Dictionary

Paul's companion in missionary tours. Not mentioned in Acts. A Greek, and therefore a Gentile (Galatians 2:1; Galatians 2:3); converted through Paul (Titus 1:4), "mine own son after the common faith." Included in the "certain other of them" who accompanied the apostle and Barnabas when they were deputed from the church of Antioch to consult the church at Jerusalem concerning the circumcision of Gentile converts (Acts 15:2), and agreeably to the decree of the council there was exempted from circumcision, Paul resisting the attempt to force Titus to be so, for both his parents were Gentile, and Titus represented at the council the church of the uncircumcision (contrast TIMOTHY who was on one side of Jewish parentage: Acts 16:3.) He was with Paul at Ephesus (Acts 19), and was sent thence to Corinth to commence the collection for the Jerusalem saints, and to ascertain the effect of the first epistle on the Corinthians (2 Corinthians 7:6-9; 2 Corinthians 8:6; 2 Corinthians 12:18); and there showed an unmercenary spirit. Next, Titus went to Macedon, where he rejoined Paul who had been eagerly looking for him at Troas (Acts 20:1; Acts 20:6; 2 Corinthians 2:12-13); "Titus my brother" (2 Corinthians 7:6; 2 Corinthians 8:23), also "my partner and fellow helper concerning you." The history (Acts 20) does not record Paul's passing through Troas in going from Ephesus to Macedon, but it does in coming from that country; also that he had disciples there (Acts 20:6-7) which accords with the epistle (2 Corinthians 2:12): an undesigned coincidence confirming genuineness. Paul had fixed a time with Titus to meet him at Troas, and had desired him, if detained so as not to be able to be at Troas in time, to proceed at once to Macedon to Philippi, the next stage on his own journey. Hence, though a wide door of usefulness opened to Paul at Troas, his eagerness to hear from Titus about the Corinthian church led him not to stay longer there, when the time fixed was past, but to hasten on to Macedon to meet Titus there...

Link: https://bible-history.com/faussets/T/Titus/