It could also be a German with a Polish/Hungarian/Czech name.
cze- seems quite Polish to me. Could it not be a Pole or someone
with a Polish name makingconcertinas in Germany? Also I don't
know if someone would respell their name and if so, that way. Is
there a German construction for a "che" sound?
Historically (according to a professor I had while in the CR), the name
"Czechoslovakia" has a Polish deriviation. The name was concieved at
the last minute during whichever treaty created the nation out of Bohemia,
Moravia, and Slovakia.