I’ve recently come across the interesting ways in which infectious disease has played a part in the way geographic regions and peoples change in their language customs. In the 14th century, during one of the multiple outbreaks of the Black Death, so many french tutors died that children in Britain began to be educated in their native language, thus helping its spread.
Translation: You’re S.O.L. kids, Girard is out, Cobb is in.
source: A Distant Mirror: The Calamitous 14th Century by Tuchman