Prince Michael Radziwill 1907-1974 (1907–1974) Parents Karol Radziwiłł Countess Marie Josepha Zamoyska Children Prince Charles Radziwill Prince Antoni Radziwill Siblings Krzysztof Bisping Elzbieta Bisping Krystyna Bisping Andrzej Bisping Stanyslaw Bisping Piotr Bisping Jan Bisping Ewa Bisping Teresa Bisping Maria Bisping Ludwik Bisping Adam Bisping Jozef Bisping Partners Aldona Chlapowska Countess Elizabeth Potocka