Agabus in Easton's Bible Dictionary

a "prophet," probably one of the seventy disciples of Christ. He prophesied at Antioch of an approaching famine (Acts 11:27, 28). Many years afterwards he met Paul at Caesarea, and warned him of the bonds and affliction that awaited him at Jerusalem should he persist in going thither (Acts 21:10-12).

Link: https://bible-history.com/eastons/A/Agabus/