In origin, Wymysorys appears to derive from 12th-century Middle High German, with a strong influence from Low German, Dutch, Polish, Old English and perhaps Frisian. The inhabitants of Wilamowice are thought to be descendants of German, Flemish and Scottish settlers who arrived in Poland during the 13th century. However, the inhabitants of Wilamowice always denied any connections with Germany and proclaimed their Flemish origins. Although related to German, Wymysorys is not mutually intelligible with Standard German (that is the case for most other German dialects as well).