Josef Colloredo-Mansfeld (1910-1990) Czech nobleman, owner of Opočno (1910–1990) Parents Hieronymus von Colloredo-Mannsfeld Bertha Henriette Katharina Nadine Kolowrat-Krakowská Children Kristina Colloredo-Mansfeld Siblings Hieronymus Colloredo-Mannsfeld Friedrich Colloredo-Mannsfeld Weikhard Colloredo-Mansfeld Maria Dolores Franzyska Kolowrat-Krakowská
