Who was Bastard daughter of Franz Joseph you of Austria?

The "bastard daughter" of Franz Joseph I of Austria is often thought to refer to Maria Anna Schicklgruber, although her paternity is not definitively established. Franz Joseph, the long-reigning emperor of Austria, was known for his strict adherence to royal duties and family values, which makes the notion of a legitimate illegitimate child somewhat controversial. The identity and existence of any such offspring have been subjects of speculation and rumor, but there is no concrete historical evidence to support these claims.