1 Kings 16:1 - Albert Barnes' Notes on the Bible

Hanani, the father of Jehu, was seer to Asa in the kingdom of Judah 2 Chronicles 16:7-10. His son Jehu, who here discharges the same office in the kingdom of Israel, appears at a later date as an inhabitant of Jerusalem where he prophesied under Jehoshaphat, whom he rebuked on one occasion. He must have lived to a great age, for he outlived Jehoshaphat, and wrote his life (marginal references).