Pennsylvania DutchThe term "Pennsylvania Dutch" refers to immigrants from German-speaking areas of Europe who settled in Pennsylvania before about 1800. The German word for German language is Deutch, which was corrupted to Dutch in early America. (This has nothing to do at all with the Netherlands.) Many Pennsylvania Dutch came to Pennsylvania seeking religious refuge and belonged to Quaker, Mennonite, Amish, or Brethren groups. The German language was common in Pennsylvania and many records of the Pennsylvania Dutch, including Tombstones, were written in German.
Genealogy web sites that seek to promote research on Pennsylvania Dutch ancestors, include Pennsylvania Dutch Family History by FamilyHart.