The Greek proper name Euboulos (Εὔβουλος) means good counsel, well-advised. It appears once in the NT — 2 Timothy 4:21 — where Paul names Eubulus among those who send greetings to Timothy. The compound from eu (well) and boulē (counsel) reflects the Greek custom of aspirational naming.
In 2 Timothy 4:21, Paul writes from prison, likely during his final imprisonment in Rome. Among the believers who remain with him and send greetings to Timothy are Euboulos, Pudens, Linus, and Claudia. The mention is brief but poignant — these are the faithful few who did not abandon the apostle when others turned away (cf. 2 Tim 4:16). Tradition links Linus in this verse with the Linus who became bishop of Rome after Peter, suggesting this circle of believers held significant roles in the early Roman church.