Charles Augustus, Hereditary Grand Duke of Saxe-Weimar-Eisenach Titular Grand Duke of Saxe-Weimar-Eisenach (1912-1988) (1912–1988) Parents Princess Feodora of Saxe-Meiningen Wilhelm Ernst I, Grand Duke of Saxe-Weimar-Eisenach Children Elisabeth Sophie Prinzessin von Sachsen-Weimar-Eisenach Michael-Benedikt of Saxe-Weimar-Eisenach Beatrice-Marie Prinzessin von Sachsen-Weimar-Eisenach Siblings Princess Sophie of Saxe-Weimar-Eisenach Jörg Brena Bernhard Friedrich Prinz von Sachsen-Weimar-Eisenach Partners Baroness Elisabeth of Wangenheim-Winterstein