Historical clue formulations

• King of the gods in Wagner's "Der Ring des Nibelungen" — 2022-04-24
• King of the gods in Wagner's "Ring" cycle — 2017-05-22
• Odin, to the Germans — 2010-12-02
• "Der Ring des Nibelungen" war god — 2010-07-15
• Odin, to the Germans — 2002-05-15
• Teutonic war god — 2000-09-21