Ahaziah of Judah or Jehoahaz I, was the sixth king of Judah, and the son of Jehoram and Athaliah, the daughter of king Ahab of Israel. He was also the first Judahite king to be descended from both the House of David and the House of Omri, through his mother and successor, Athaliah.
The Tel Dan Stele, dating from circa the 9th century BCE, was discovered in Tel Dan and is the most important archaeological artifact to mention the House of David outside of the Bible