1 Timothy 4.9-22: Who and Where?

• Demas:  a male companion and fellow-laborer of Paul; (Philemon 1.24; Colossians 4:14; 2 Timothy 4.10)
• Thessalonica: (Acts 17:1-10; 20.1-3; 1 & 2 Thessalonians)
• Crescens
• Galatia: This province of Galatia was in the central region of Asia Minor. (Acts 16.6; 18.23; Galatians)
• Titus: Trusted associate and co-worker of Paul. (2Co 2:13; 7:6,13 ff; 2Co 8:6,16,23; 12:18; Ga2Co 1:2:2Co 1:1-24,3; 2Ti 4:10; Tit 1:4)
• Dalmatia: It was the southern portion of the Roman province of Illyricum lying on the eastern shore of the Adriatic.
• Luke: (Luke; Col 4:14; 2Ti 4:11; Phm 1:24)
• Mark:(Ac 12:25; 1Pe 5:13
• Tychicus: (Ac 20:4; Eph 6:21; Col 4:7; 2Ti 4:12; Tit 3:12)
• Ephesus:  A city of the Roman province of Asia, near the mouth of the Cayster river, 3 miles from the western coast of Asia Minor, and opposite the island of Samos.
• Carpus
• Troas: The chief city in the Northwest of Asia Minor, on the coast of Mysia in the Roman province of Asia. (Ac 16:8; 20:5-12)
• Alexander: (1Ti 1:19-20; 2Ti 4:14-15; It is not clear that both of these are the same person.)
• Prisca and Aquila: (Ac 18:1-4; 24-26; Ro 16:3-4; 1Co 16:19)
• Onesiphorus  (2 Tim. 1:16-18; 4:19)
• Erastus
• Corinth: a Grecian city, on the isthmus which joins the Peloponnesus to the mainland of Greece. (Acts 18; 19.1ff; 1 & 2 Corinthians)
  
• Trophimus: (Acts 20:4; 21:29)
• Miletus: a seaport town and the ancient capital of Ionia, about 36 miles south of Ephesus (Acts 20:15-38)
  
• Eubulus:
• Pudens
• Linus
• Claudia 

The caution with these (and all) articles about Bible characters is to shy away from assumptions about how things fit together and use them to develop some sort of teaching.