Supposedly. Hitler's father, Alois Hitler, was an illegitimate child and, for the first 39 years of his life, bore his mother's surname, Schicklgruber. Letters were discovered by Hans Frank that revealed Ms. Maria Schicklgruber, aged forty-two, was employed as a housekeeper for a Jewish family in Graz and that the family’s nineteen-year-old son, Leopold Frankenberger, fathered Alois. When Maria married, Alois took the surname of his stepfather, Johann Georg Hiedler, sometimes spelled Hitler. If the story about Leopold Frankenberger is true, that would make Hitler one quarter Jewish. By Nazi standards, however, Hitler would not be considered a Jew (a person must have three or four Jewish grandparents to be called a Jew).