In the eastern regions of Pomerania, Germanization took place much later. Johannes Bugenhagen wrote that at the beginning of the 16th century the German-Slavic language border was near Köslin. During the 17th century, the border between areas with mostly German-speaking and mostly Slavic-speaking populations ran more or less along the present-day border between West Pomeranian and Pomeranian Voivodeships.
