Possible Clues:

• Teutonic name part
• German name part
• Relative of Da and De
• Middle of many German names
• With 51-down, burlesque dancer and Marilyn Manson ex Dita
• Rocket scientist Wernher ___ Braun
• "___ Ryan's Express" (1965)
• __ Trapp (''Sound of Music'' surname)
• Baron ___ Richthofen
• Manfred __ Richthofen (The Red Baron)