`  :There certainly seems to be limited evidence that authoritative sources identify an entity known as the ``Kingdom of Cornwall``, or at least that they choose to describe it as such, per the evidence above and a Google Books search. Books I have that might be expected to touch on it or refer to it (admittedly limited in number and of a generalist nature) do not talk about a ``Kingdom`` at this time, although obviously it was a separate entity of some sort to England/Wessex. I'm no expert myself on this era of history and have no access to specialised sources, but, as noted, the substantive content might seem better placed elsewhere, in other pages – and indeed already is. ''' /''' `