Romans 16:21-23 — Timotheus my workfellow, and Lucius, and Jason, and Sosipater, my kinsmen, salute you.
I Tertius, who wrote this epistle, salute you in the Lord.
Gaius mine host, and of the whole church, saluteth you. Erastus the chamberlain of the city saluteth you, and Quartus a brother.
Lucius — maybe Lucius of Cyrene (Acts 13:1)
Jason (Acts 17:5)
Sosipater — Sopater (Acts 20:4)
Tertius — Paul's secretary
Gaius (1 Corinthians 1:14) and also the same man who is called Titus Justus in Acts 18:1-8.
Erastus (Acts 19:22; 2 Timothy 4:20)
brother — in the faith
chamberlain — treasurer
Tertius and Quartus — "third and fourth" — Probably slaves of third and fourth importance in a household.