https://en.wikipedia.org/wiki/Pennsylvania_Dutch_language
Pennsylvania Dutch (Deitsch, Pennsilfaanisch-Deitsch or Pennsilfaanisch), referred to as Pennsylvania German in scholarly literature, is a variety of Palatine German spoken by the Old Order Amish, Old Order Mennonites, Fancy Dutch, and other descendants of German immigrants in the United States and Canada. There are possibly more than 300,000 native speakers of …