Hitler

"Hitler was not sure who his paternal grandfather was, but it was probably either Johann Georg Hiedler or his brother Johann Nepomuk Hiedler. There have been rumours that Hitler was one-quarter Jewish and that his paternal grandmother, Maria Schicklgruber, had become pregnant after working as a servant in a Jewish household in Graz. During the 1920s, the implications of these rumours along with his known family history were politically explosive, especially for the proponent of a racist ideology. Opponents tried to prove that Hitler, the leader of the anti-Semitic Nazi Party, had Jewish or Czech ancestors. Although these rumours were never confirmed, for Hitler they were reason enough to conceal his origins. Soviet propaganda insisted Hitler was a Jew, though more modern research tends to diminish the probability that he had Jewish ancestors. Historians such as Werner Maser and Ian Kershaw argue this was impossible, since the Jews had been expelled from Graz in the 15th century and were not allowed to return until well after Maria Schicklgruber's alleged employment."

http://en.wikipedia.org/wiki/Hitler

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