Princess Eufemia Radziwill (1850-1877) (1850–1877) Parents Mathilde Gräfin von Clary und Aldringen Wilhelm Fürst von Radziwill Children Count Leon Rzyszczewski Count Antoni Rzyszczewski Countess Eva Rzyszczewski Countess Eufemia Rzyszczewski Siblings Prince Janusz Radziwill Princess Leontyna Radziwill Princess Elira Radziwill Princess Matylda Radziwill Prince Wilhelm Radziwill Princess Ludowika Radziwill Antoni Wilhelm Radziwiłł Partners Count Michal Rzyszczewski