Question: Which realm was passed onto this duke whose father passed away before his birth and whose history was documented in the memoirs of Helene Kottanner?
Sentence (from "Ladislaus the Posthumous"): Ladislaus the Posthumous, known also as Ladislas (Hungarian: "Utószülött László" ; 22 February 144023 November 1457) (in Hungarian: V. László), was Duke of Austria, and King of Hungary, Croatia and Bohemia.
Relevant evidence: No