Kurš datēja Rudolf, Crown Prince of Austria?

Rudolf, Crown Prince of Austria (Rudolf Franz Karl Josef; 21 August 1858 – 30 January 1889) was the only son and third child of Emperor Franz Joseph I and Empress Elisabeth of Austria. He was heir apparent to the imperial throne of the Austro-Hungarian Empire from birth. In 1889, he died in a suicide pact with his mistress Baroness Mary Vetsera at the Mayerling hunting lodge. The ensuing scandal made international headlines.

Mizzi Kaspar, or Mitzi Kaspar (September 28, 1864 – January 29, 1907), was an Austrian actress and the royal mistress of Rudolf, Crown Prince of Austria.

Baroness Marie Alexandrine "Mary" von Vetsera (19 March 1871 – 30 January 1889) was an Austrian noblewoman and the mistress of Rudolf, Crown Prince of Austria. Vetsera and the crown prince were found dead at his hunting lodge in Mayerling on 30 January 1889, following an apparent murder-suicide, which is known as the Mayerling incident.