Archduke Ferdinand of Austria Austrian Imperial and Royal (1918-2004) (1918–2004) Parents Archduchess Franziska, Archduchess Maximilian Eugen of Austria Archduke Maximilian Eugen of Austria Children Archduchess Sophie, Princess of Windisch-Graetz Archduke Maximilian of Austria Archduchess Elisabeth of Austria Siblings Archduke Heinrich of Austria Partners Archduchess Helene, Archduchess Ferdinand of Austria