Eleanor, It appears that your grandfather Johann Lukas came from Kreisch, not too far from Mediasch. This is confirmed on his naturalization record found on the Stark County website. Here is the link:
http://www.starkclerk.org/natural/ . I have access to information on his ancestors. You can email me at
mskindell@aol.com and I can help you with some data. Mike from Cleveland, OH.