Princess Matylda Radziwill (1836-1918) (1836–1918) Parents Wilhelm Fürst von Radziwill Mathilde Gräfin von Clary und Aldringen Children Elisabeth Prinzessin zu Windisch-Grätz Aloisa Prinzessin zu Windisch-Grätz Ernst Prinz zu Windisch-Grätz Siblings Prince Janusz Radziwill Antoni Wilhelm Radziwiłł Princess Ludowika Radziwill Prince Wilhelm Radziwill Princess Eufemia Radziwill Princess Elira Radziwill Princess Leontyna Radziwill Partners Prince Hugo, 2nd Prince of Windisch-Graetz