Albert Barnes Commentary Romans 16:21

"Timothy my fellow-worker saluteth you; and Lucius and Jason and Sosipater, my kinsmen." — Romans 16:21 (ASV)

Timotheus. Timothy; to whom the epistles which bear his name were written. He was long the companion of Paul in his labours, Acts 16:1; 1 Corinthians 16:10; 2 Corinthians 1:1, 19; Philippians 2:19; 1 Thessalonians 3:2; 1 Timothy 1:2; Hebrews 13:23.

And Lucius. He is mentioned in Acts 13:1 as a prophet and teacher, a native of Cyrene. Nothing more is known of him.

My kinsmen. Romans 16:7.