No insult to my intelligence taken! I was trying to get you to lighten up.
However I did misunderstand something due to a grammatical error, you mean the word you're looking to use is NOW, not KNOW. And to say NO longer, means not anymore- it may just be me, but those are 3 words that have very different meanings and since we have to go by what's written...sometimes type-o's don't matter and other times they can make all the difference! :o And I re-read what you wrote a couple of times, and you're right, it sounded like you were talking about Spanish, and not the shared dialect these areas once had.
Just in case- to clarify-all of Spain DOES speak Spanish, I know there are some places, due to their remoteness, that may not speak it, but generally as a whole-and yes, I am noting exceptions, but they are few- every region in Spain speaks Spanish. The biggest difference may lie in how well they speak it,or even if they choose to use it (take Cataluna for instance) but everyone does!