[fortheDeclaration]

Latent incubation
Between the fifth and tenth centuries, the dialects of spoken Vulgar Latin diverged in various parts of their domain, eventually becoming distinct languages.....

Recognition of the vernaculars
Between the 10th and 13th centuries, some local vernaculars developed a written form and began to supplant Latin in many of its roles. In some countries, such as Portugal, this transition was expedited by force of law; whereas in others, such as Italy, many prominent poets and writers used the vernacular of their own accord.

http://en.wikipedia.org/wiki/Romance_languages

[fortheDeclaration]

In general, the Church has always allowed the reading of the Bible in the vernacular, if it was desirable for the spiritual needs of her children; (emphasis added) she has forbidden it only when it was almost certain to cause serious spiritual harm.

http://www.newadvent.org/cathen/13635b.htm

LOL!

[MarkBsnr]

***Between the 10th and 13th centuries, some local vernaculars developed a written form and began to supplant Latin in many of its roles. ***

Wikipedia, the most accurate reference text known to man.

Began to supplant in many of its roles does not mean that Latin was still not the universal language until French replaced it and then English replaced that beginning in the 1800s.

The American public school system is very proud of many of its graduates, I believe.