Duchess Eilika of Oldenburg Princess consort of Leiningen (1928–2016) Parents Nikolaus, Hereditary Grand Duke of Oldenburg Princess Helene of Waldeck and Pyrmont Children Princess Melita of Leiningen Prince Karl Emich of Leiningen Princess Stephanie of Leiningen Andreas, 8th Prince of Leiningen Siblings Duchess Altburg of Oldenburg Duke Peter of Oldenburg Anton-Günther, Duke of Oldenburg Duke Johann of Oldenburg Duchess Rixa of Oldenburg Duke Friedrich August of Oldenburg Duke Egilmar of Oldenburg Huno Herzog von Oldenburg Partners Emich, 7th Prince of Leiningen