Carl Alfred, 12th Duke of Croÿ (1859-1906) (1859–1906) Parents Prince Rudolf, 11th Duke of Croÿ Princess Natalie de Ligne Children Prince Anton of Croÿ Engelbert Prinz von Croÿ Karl Rudolf Engelbert Phillipp Leo Herzog von Croÿ Princess Isabella Antonie of Croÿ Siblings Princess Nathalie de Croÿ Klementine Prinzessin von Croÿ Princess Isabella of Croÿ Eugenie Prinzessin von Croÿ Partners Ludmilla Prinzessin von Arenberg