One of Many ~ The Janisch Clan: Janisch is a rare surname in the United States; it originates with the Christian name Jan or Johannes. From the map, you can see that Janisch families were concentrated in the Upper Midwest in 1920. Still, the number of families was few. To the prairies of the United States they came from central Europe in the late 1800s and early 1900s, part of an immigrant wave from the Slavic frontier of the German realm. Maple Grove Cemetery.