Dictionary

Fortunatus

Easton's Dictionary

Fortunate, a disciple of Corinth who visited Paul at Ephesus, and returned with Stephanas and Achaicus, the bearers of the apostle’s first letter to the Corinthians (1 Cor. 16:17).

Smith's Dictionary

(fortunate) (1 Corinthians 16:17) one of the three Corinthians the others being Stephanas and Achaicus, who were at Ephesus when St. Paul wrote his first epistle. There is a Fortunatus mentioned in the end of Clement’s first epistle to the Corinthians, who was possibly the same person.

International Standard Bible Encyclopedia

for-tu-na'-tus (Phortounatos):

A Roman proper name turned into Gr; same as Latin adjective fortunatus, meaning "blest," or "fortunate." Found only once in the Bible (1Co 16:17). Fortunatus, with Stephanas and Achaicus, was an amabassador of the Corinthian church, whose presence at Ephesus refreshed the spirit of the apostle Paul.