Princess Maria Theresia of Schönburg-Hartenstein (1896–1979) Parents Johanna Gräfin von Colloredo-Mannsfeld Alois, Prince of Schönburg-Hartenstein Children Alajos Gróf Kálnoky von Köröspatak Countess Margarete Kálnoky von Köröspatak Siblings Alexander, 5th Prince of Schönburg-Hartenstein Princess Karoline of Schönburg-Hartenstein Princess Margarethe of Schönburg-Hartenstein Partners Count Alexander Kálnoky von Köröspatak