Query: Biographical films about German royalty
Relevant documents:
The Old and the Young King
Augustus the Strong (film)
Ludwig (film)
Ludwig II (1922 film)
The Hymn of Leuthen
The Flute Concert of Sanssouci
The Great King
Fridericus
A Prussian Love Story
Prinz Louis Ferdinand
Queen Louise (1927 film)
The Mill at Sanssouci
Ludwig II (2012 film)
Ludwig II: Glanz und Ende eines Königs
Ludwig: Requiem for a Virgin King
Queen Louise (1957 film)