Ahab was the son and successor of King Omri and the husband of Jezebel of Sidon, according to the Hebrew Bible. He was widely criticized for causing "moral decline" in Israel, according to the Yahwists. But modern scholars argue that Ahab was a Yahwist and introduced his god to the Kingdom of Judah via imperialism. This mostly occurred in the latter half of his reign.
Shalmaneser III's (859–824 BC) Kurkh Monolith names King Ahab.
Death of Ahab, by Gustave Doré
Omri was, according to the Hebrew Bible, the sixth king of Israel. He was a successful military campaigner who extended the northern kingdom of Israel. Other monarchs from the House of Omri are Ahab, Ahaziah, Joram, and Athaliah. Like his predecessor, king Zimri, who ruled for only seven days, Omri is the second king mentioned in the Bible without a statement of his tribal origin. One possibility, though unproven, is that he was of the tribe of Issachar.
The Mesha Stele
In a scene from the Black Obelisk Jehu, designated mIa-ú-a mar mHu-um-ri-i (Jehu of the land of people of Omri) bows before Shalmaneser III.