Archduchess Elisabeth Marie of Austria Royalty
Archduchess Elisabeth Maria Henriette Stephanie Gisela of Austria (2 September 1883, Laxenburg – 16 March 1963, Vienna) was the only child of Crown Prince Rudolf of Austria and Princess Stéphanie of Belgium. She was known to the family as "Erzsi", a diminutive of her name in Hungarian. Later nicknamed "The Red Archduchess", she was famous for becoming a socialist and a member of the Austrian Social Democratic Party.