Rudolf, Crown Prince of Austria was the only son and third child of Emperor Franz Joseph I of Austria and Duchess Elisabeth of Bavaria. He was heir apparent to the imperial throne of the Austro-Hungarian Empire from birth. Wikipedia
Born: August 21, 1858, Laxenburg Castle Park, Austria
Died: January 30, 1889 (age 30 years), Mayerling, Austria
Children: Archduchess Elisabeth Marie of Austria
Parents: Empress Elisabeth of Austria and Franz Joseph I of Austria
Spouse: Princess Stéphanie of Belgium (m. 1881–1889)