It used to be thought that David and Solomon were legendary figures since the only sources for them are the Old Testament (aka "except for the evidence, there is no evidence"), but then the Tel Dan stele was discovered in 1993.

The stele only exists in fragments and dates to the 9th century BC, likely erected by Hazael, King of Aram-Damascus, though the speaker is unknown. The relevant portion of the stele likely reads "I killed Jehoram, son of Ahab King of Israel, and Ahaziah, son of Jehoram King of the House of David". Jehoram and Ahaziah are referenced as kings of Judah in 2 Kings 8:16-29. Ahab is mentioned as the King of Israel in 1 Kings 16:28-29, on the Kurkh Stele documenting the Battle of Qarqar, and on the Moabite Stone.