Siegfried Wagner German opera producer and composer, son of Richard Wagner and Cosima Liszt (1869–1930) (1869–1930) Parents Cosima Wagner Richard Wagner Children Wieland Wagner Verena Wagner Lafferentz Walter Aign Friedelind Wagner Wolfgang Wagner Siblings Eva von Bülow Blandine Gravina Isolde Wagner Daniela von Bülow Partners Winifred Wagner
