High Prussian dialect
High Prussian is the group of East Central German dialects in former East Prussia, in present-day Warmian-Masurian Voivodeship, Poland. High Prussian developed in the 13th–15th centuries, brought in by German settlers mainly from Silesia and Thuringia, and was influenced by the Baltic Old Prussian language.
High Prussian dialects were spoken mainly in the Catholic region of Warmia and adjacent East Prussian Oberland region beyond the Passarge River in the west, subdivided into Breslausch and Oberländisch. They were separated from the Low Prussian dialect area by the Benrath line isogloss to the west, north and east; to the south they bordered on the Polish Masurian dialect region.
Like Silesian German, High Prussian is moribund due to the evacuation and expulsion of the German-speaking population from the Province of East Prussia during and after World War II. The dialect has few remaining speakers today.
