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Not necessarily. It is generally very rash to make assumptions about a person's ethnicity simply on the basis of their family name.
Many Jews from Poland, Russia, Ukraine and the Baltic countries had German-language names, because Yiddish is largely derived from German. So having a German-sounding name does not make someone German, much less a German Jew.
What else can I help you with?
What has the author Clara Grunwald written?
Clara Grunwald has written: '\\' -- subject(s): Correspondence, Jewish teachers, Teachers
When did Wilhelm Grunwald die?
Wilhelm Grunwald died in 1989.
When was Lisa Grunwald born?
Lisa Grunwald was born in 1959.
When did Ernest Grunwald die?
Ernest Grunwald died in 2002.
When was Ernest Grunwald born?
Ernest Grunwald was born in 1923.
When was Cross of Grunwald created?
Cross of Grunwald was created in 1943.
When did Cross of Grunwald end?
Cross of Grunwald ended in 1992.
When was Glen Grunwald born?
Glen Grunwald was born in 1958.
What is the population of Gmina Grunwald?
The population of Gmina Grunwald is 5,648.
How tall is Ernie Grunwald?
Ernie Grunwald is 6' 4".
How tall is Lilo Grunwald?
Lilo Grunwald is 5' 1".
When was Al Grunwald born?
Al Grunwald was born on 1930-02-13.
