|Easton's Bible Dictionary|
With Baal, a king of Sidon (B.C. 940-908), father of Jezebel, who was the wife of Ahab (1 Kings 16:31). He is said to have been also a priest of Astarte, whose worship was closely allied to that of Baal, and this may account for his daughter's zeal in promoting idolatry in Israel. This marriage of Ahab was most fatal to both Israel and Judah. Dido, the founder of Carthage, was his granddaughter.
Int. Standard Bible Encyclopedia
eth-ba'-al, eth'-ba-al ('ethba`al, "with Baal"):
"King of the Sidonians," and father of Jezebel whom Ahab king of Israel took to wife (1 Kings 16:31).
Ethbaal (1 Occurrence)
1 Kings 16:31 It happened, as if it had been a light thing for him to walk in the sins of Jeroboam the son of Nebat, that he took as wife Jezebel the daughter of Ethbaal king of the Sidonians, and went and served Baal, and worshiped him. (WEB KJV JPS ASV BBE DBY WBS YLT NAS NIV)