Abijam in Easton's Bible Dictionary

father of the sea; i.e., "seaman" the name always used in Kings of the king of Judah, the son of Rehoboam, elsewhere called Abijah (1 Kings 15:1,7,8). (See ABIJAH -T0000036, 5.)

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