I believe King of the Road was one of the earlier 4-season or Full-time units.
They had quite a few different models, so am not sure where the Royal Villa falls.
Brands Produced: King of the Road Models: Crown Marquis, Genesis, Marquis, Marquis II, Royal Lite, Royal Villa
Here's the Recall record:
http://www.recallrecord.com/auto/kin...ad/royalvilla/
...and finally a 2007 Brochure.
http://media.rvusa.com/library/07_royalvilla_FW.pdf
I can't remember the reason they went under, but it was during the Economic Slowdown.