Vernacular does not mean cast in stone.

Wikipedia is an excellent resource that simply has to be used wisely and with insight. No-one is claiming that it's the last word on anything or that it's complete or error-free. If you're prepared to put in the effort you can check the references to the Wiki entry mentioned by Joe and me. Two things there: first, don't diss it before you've checked, and second, don't diss it unless you're prepared to make that effort. Personally, I have no particular reason to doubt the entries we mentioned. If you have such doubts, let us know with your reasons.