Ever since I can remember I have heard from the Biblical minimalist school say that there was no evidence of a Davidic kingdom-or at least that there was a very small one, with a small capitol. Of course, then there was an inscription found in Northern Israel with the name of the House of David on it- far, far away from Jerusalem (meaning it couldn't have been small as some of them claimed!). But now there's more evidence!
I just found this online. Interesting news report confirms a very large ancient Davidic kingdom:
The significance of this extraordinary find is that it provides new proof of the existence and power of the Davidic monarchy, the Israelite state that it led, and the more than 3,000-year-old Jewish presence in Jerusalem. These new discoveries, along with those of a previous dig in a different area of the city of David, contradict contrary Palestinian claims that the Jews have no claim to the area. They also debunk the assertions of some Israeli archeologists who have sought to portray the kingdom of David and Solomon as an insignificant tribal group and not the regional empire that the bible speaks about. Indeed, Mazar believes that the strength and the form of construction required to build these structures correlates with biblical passages that speak of Solomon’s building of a royal palace and of the Temple with the assistance of master builders from Phoenicia (modern day Lebanon). Moreover, contrary to those who speak of the Jewish presence in the city as a passing phase in ancient times, the discovery of Jewish seals, which speak directly of an Israelite state, proves that what Mazar has found are not the remains of a Jebusite fort conquered by the Jews but rather of a great city built by David and his son Solomon.While finding ancient Jewish artifacts as well as the traces of Solomon’s city in Jerusalem may seem nothing out of the ordinary, for the last century and a half, a great many academics and intellectuals have attempted to put down the existence of the ancient Jewish kingdom — which has always served as a symbol of Jewish nationhood — as a religiously-inspired fiction. This deconstruction of both biblical literature and history has sought to undermine the very idea of the historical truth about ancient Israel as well as the notion that Jewish nationhood had its roots in the past. This has been put to use by anti-Zionists and Arabs who have thought that if they could destroy the idea of King David’s existence as a historic figure, they could delegitimize modern Israel. Thus, Palestinian propagandists and the Palestinian Authority itself, which has steadfastly denied any Jewish connection to the Old City, the Temple Mount, or even the Western Wall, have copied revisionist scholarly work doubting Jewish history and incorporated that work into their negotiating position about the city’s future. The Muslim religious authority that controls the site of the Temple Mount has vandalized the area, destroying a treasure trove of antiquities in the ancient place because they fear that any find that betrays the Jewish origins of the place will undermine their fallacious claims that seek to portray Jews as foreign occupiers in their own ancient capital.