Prince Robert Hugo, Hereditary Duke of Parma Head of the House of Bourbon-Parma (1909–1974) Parents Prince Elias, Hereditary Duke of Parma Archduchess Maria Anna of Austria Children Siblings Princess Maria Christina of Parma Infanta Alicia, Duchess of Calabria Princess Giovanna Isabella of Parma Princess Elisabetta of Parma Princess Marie Francesca of Parma Carlo Luigi di Borbone, Principe di Parma Francesco Alfonso di Borbone, Principe di Parma