@ned there was plenty of non-ethnical political supremacy (aka kingdoms that formed that were neither jewish nor arabic and contained both people)... sure.
Yes there was one tiny piece of rock found in some sand called the Tel Dan Stele which has the phrase "house of david" on it, which would be a reference to a lineage from king david.
That evidence is quite weak.. for one important reason...
The kingdom by which the house of david rules according to the bible was 1047 bc to 930 bc. However the Tel Dan Stele was created between 870 BV to 750 BC, which would place it 60 years after the **fall** of the kingdom at the soonest, or as late as 180 years after its fall.
This lines up more closely with the biblical scrolls than with history and is highly suggests this inscription was **not** an indication of such a kingdom at all (since it wouldnt have existed when created), and far more likely to be an inscription that was inspired by the scrolls and fictional stories of the time.