Charles Ellicott Commentary 1 Kings 16:1

"And the word of Jehovah came to Jehu the son of Hanani against Baasha, saying," — 1 Kings 16:1 (ASV)

Jehu the son of Hanani — probably of Hanani the seer of Judah in the reign of Asa (2 Chronicles 15:7). Jehu must have been young then, for we find him rebuking Jehoshaphat after the death of Ahab, and writing the annals of Jehoshaphat’s reign (2 Chronicles 19:2; 2 Chronicles 20:34).