Possible Clues:

• King of the dwarfs in medieval German legend
• The dwarf who renounces love in Wagner’s Das Rheingold
• Bachelor getting into beer with wealthy old dwarf
• Dwarf in German legend, and a character in Wagner's 'Der Ring des Nibelungen'
• Guardian of the treasures of the Nibelungs in German legend
• King of the elves makes nearly everyone get wealthy
• German dwarf-king joining a line to have wealth