Question: What was the name of Archduchess Elisabeth Marie of Austria's father's mistress?
Sentence (from "Princess Stéphanie of Belgium"): Princess Stéphanie of Belgium (21 May 1864 – 23 August 1945) was a Belgian princess by birth and became Crown Princess of Austria through her marriage to the heir-apparent of the Habsburg dynasty, Archduke Rudolf.
Relevant evidence: No