Question: When was the king who was the subject of Siegfried Obermeier's "The Secret Diaries of Ludwig II of Bavaria" born? 
Sentence (from "Siegfried Obermeier"): Siegfried Obermeier (Munich, 21 January 1936 - Oberschleißheim near Munich, 21 January 2011) was a German author of historical novels and popular history books.
Relevant evidence: Yes