There is another story about an alleged son of Rudolf ...
Rudolf got to know Johanna Buska, an actress of the Burgtheater in Vienna, in 1877. Johanna was 11 years older than the Crownprince. When Franz Joseph was informed about their intimate relationship, he made Rudolf leave for Prague where he was supposed to forget his actress. But Johanna, who really seemed to be in love with Rudolf, traveled to Prague, too. In April 1880, Franz Joseph was informed about the pregnancy of Johanna. For the Emperor it was the easiest solution to find a husband for Johanna. So she had to marry Nikolaus Kasimir Török de Szendrö, who was 35 years older than her. Nikolaus was definitely not the father of Johanna's child and if you keep in mind the Emperor's attempts to keep the paternity of this child in secret, it's definitely possible that Rudolf was the father.
Alexander Bernhard Eduard Valentin Kasimir, Johanna's son, was born on February 14th 1881. His step-father Nikolaus died when he was four. Another four years went by and Johanna married Angelo Neumann who worked at the theatre of Prague. After Neumann's death, Johanna returned to Vienna. Alexander, her son, lived in Budapest where he married Sophie Jovanovits in June 1912. No one actually knows what happened to Alexander ... maybe he lived in Budapest for the rest of his life? Marie Larisch - who else, by the way
- claimed to have seen him somewhere in America.