Pennsylvania Dutch refers to immigrants and their descendants from southwestern Germany and Switzerland who settled in Pennsylvania in the 17th and 18th centuries. Historically they have spoken the dialect of German known as Pennsylvania Dutch or Pennsylvania German. The first major emigration of Germans to America resulted in the founding of the Borough of Germantown in northwest Philadelphia County, Pennsylvania on October 6, 1683. Mass emigration of Palatines began out of Germany in the early 18th century. The Pennsylvania Dutch maintained numerous religious affiliations, with the greatest number being Lutheran or Reformed, but many Anabaptists as well.
Contributions by Stettlerj, 220.127.116.11, and Scottfisher.