LUXEMBOURG - JUNE 19: The Great Duke of Luxembourg JEAN and his wife JOSEPHINE-CHARLOTTE are surrounding their two children Princess MARIE-ASTRID and Prince HENRI and the two newborn twins Princess MARGUERITE of Luxembourg and Prince JEAN of Luxembourg. (Photo by Keystone-France/Gamma-Keystone via Getty Images)
LUXEMBOURG - JANUARY 01: In 1957 Princess MARIE ASTRID and Prince HENRI of Luxembourg, children of crown Duke JEAN of Luxembourg and his wife the Duchess JOSEPHINE CHARLOTTE, curiously examine the newborn twins JEAN and MARGUERITE. (Photo by Keystone-France/Gamma-Keystone via Getty Images)
LUXEMBOURG - SEPTEMBER 11: The family of the Duke JEAN of Luxembourg and his wife, the Duchess JOSEPHINE CHARLOTTE with their children. From left to right: Prince JEAN, Princess MARIE-ASTRID, Duke JEAN of Luxembourg, and Prince GUILLAUME who is playing with the faucet. Behind Princess JOSEPHINE CHARLOTTE is Prince HENRI and on the right is JEAN's twin sister MARGARETA. (Photo by Keystone-France/Gamma-Keystone via Getty Images)
Portrait of Prince Jean of Luxembourg with his wife Princess Josephine and their children; (L-R) Princess Margaretha, Princess Marie-Astrid, Prince Jean and Prince Henri, in the garden of the Chateau of Betzdorf in Luxembourg, July 1st 1960. (Photo by Keystone/Hulton Archive/Getty Images)
