Tychicus: Acts 20:4, 
Aristarchus: Acts 19:29, Acts 20:4, Acts 27:2 
Mark: Acts 13:5,13, Acts 15:36-41, Philemon 24, 2 Timothy 4:11
Demas: Philemon 24, 2 Timothy 4:10
Archippus: Philemon 2