Mayerling -

Often attributed to Rudolf's political frustrations, failing health, and the impossibility of his relationship with Mary.

On , the 30-year-old heir to the Austro-Hungarian throne was found dead alongside his 17-year-old lover at Mayerling . Mayerling

The Imperial Court initially claimed Rudolf died of a heart attack to ensure a Catholic burial, while Mary's body was secretly removed and buried in haste. Often attributed to Rudolf's political frustrations