| Light iron-age reading|
|Gabbin' with God|
King David was the second king of Israel and Judah, most famous for killing Goliath, although he wasn't king when he did that. David was a bit of a jerk, paying for one of his wives in Philistine foreskins, sending some dude to be killed so he could bang his wife, and the most heinous of crimes: conducting a census at the behest of Satan. Or maybe not. Jesus is supposedly descended from David, though there is the problem of being the "son of God" as it is Joseph who was the descendant of David, and if the he was conceived immaculately, then he wasn't the son of Joseph and therefore wasn't a descendant of David.
Was he real?
The source for everything we know about David is the Bible. There are a few possible extra-biblical sources, such as the Tel Dan Stele. This Aramean victory stele contains the phrase ביתדוד which translates to "House of the beloved", "House of the uncle" or "House of David".  As the stele describes a victory over Israel and an unspecified allied kingdom it isn't unreasonable to suppose they refer to Judah and its David. However, the "city of David" section of Jerusalem lacks convincing evidence for a circa 1000 BCE city, though the ruins are difficult to date accurately.  Most scholars hold the position that the Histories (Nevi'im) describe real people, in a fictionalized account. Therefore, it's likely the King David existed, and he was, for Judah, the most powerful or important King, but since no one else mentions him, he's probably not a major player in the greater Middle East region of the time. 
- He was only required to bring 100 foreskins, but he gathered 200, because you can never have enough foreskins. The whole thing was a plot by Saul to kill David, though, so he gets a pass here
- 1 Chronicles 21:1
- 2 Samuel 24:1
- Mykytiuk, Lawrence J. (2004). "Identifying Biblical Persons in Northwest Semitic Inscriptions of 1200-539 B.C.E." Atlanta, Ga.: Society of Biblical Literature. See pp. 110-132 and 265-277
- "Solomon's Jerusalem: The Text and the Facts on the Ground," in: A.G. Vaughn and A.E. Killebrew (eds.), Jerusalem in Bible and Archaeology: The First Temple Period, (Society of Biblical Literature, Symposium Series, No. 18), Atlanta, 2003, pp. 103-115. See also Cahill, J., "David's Jerusalem, Fiction or Reality? The Archaeological Evidence Proves It," and Steiner, M., "David's Jerusalem, Fiction or Reality? It's Not There: Archeology Proves a Negative," both in Biblical Archeology Review 24 (July/August 1998).
- Archeology Magazine