Apollos (‹See Tfd›Greek: Ἀπολλώς) was a 1st-century Alexandrian Jewish Christian mentioned several times in the New Testament. A contemporary and colleague of Paul the Apostle, he played an important role in the early development of the churches of Ephesus and Corinth. Biblical account. Acts of the Apostles. Apollos is first mentioned as a Christian preacher who had come to Ephesus (probably in AD 52 or 53), where he is described as "being fervent in spirit: he spoke and taught accurately the things concerning Jesus, though he knew only the baptism of John".
https://en.wikipedia.org/wiki/Apollos