Karisch is a placename in Silesia but as you can see at
http://www.verwandt.de/karten/absolut/karisch.html, it's pretty widespread in Germany, which leads me to believe that it's an alteration (along with Karies) of Karius which comes from Macarius and has the same origin as Italian Macario which you'll find at
http://www.ancestry.com/facts/Macario-family-history-sct.ashx