UTD7106418: Bishop Sven Lindegard welcoming king Carl XVI Gustaf of Sweden during his visit at Växjö, Sweden 1975 / Bridgeman Images

UTD7106430: Queen Silvia of Sweden signs the Golden Book, left King Carl XVI Gustaf, on the right: Johannes Rau with wife Christina, nee Delius, at Bonn, Germany 1984 / Bridgeman Images

UTD7106437: King Carl XVI Gustaf and Queen Silvia of Sweden at an evening gala in Bonn with Federal President Walter Scheel (left) and his wife Mildred, Germany 1979 / Bridgeman Images

UTD7106441: Georg Friedrich, Prince of Prussia, at Hohenzollern castle near Hechingen, Germany 2006 / Bridgeman Images

UTD7106445: Office, called "Markgrafenzimmer" at Hohenzollern castle, Germany 2006 / Bridgeman Images

UTD7106451: Georg Friedrich, Prince of Prussia, with an equestrian statue of emperor Kaiser Wilhelm II Its original is at the Hohenzollern bridge in Cologne, Germany 2006, Tuaillon, Louis (1862-1919) (after) / Bridgeman Images

UTD7106456: The Prussian imperial and royal family united at the celebration of the 75th birthday of Louis Ferdinand, Prince of Prussia at Villa Monbijou in Berlin, Germany 1982 / Bridgeman Images

UTD7106458: Princess Donata of Prussia with her children Georg Friedrich and Cornelie Cecilie at Ruedenhausen castle, Germany 1978 / Bridgeman Images

UTD7106460: Princess Donata of Prussia with her children Georg Friedrich and Cornelie Cecilie at Ruedenhausen castle, Germany 1978 / Bridgeman Images

UTD7106462: Princess Donata of Prussia with her son Georg Friedrich visiting the grave of her husband Prince Louis Ferdinand jr. At Ruedenhausen castle, Germany 1978 / Bridgeman Images

UTD7106463: House of royal family of Prussia at Fischerhude, Germany 1986 / Bridgeman Images

UTD7106464: Georg Friedrich, Prince of Prussia, with his mother Donata at Fischerhude, Germany 1986 / Bridgeman Images

UTD7106898: Royal visit from the Netherlands: Queen Juliana and Prince Bernhard are welcomed by federal president Gustav Heinemann at Koeln Bonn airport, Germany 1971 / Bridgeman Images

UTD7106915: Princess Bianca von Hanau at her white villa in Marbella, Spain 1985 / Bridgeman Images

UTD7106917: Princess Bianca von Hanau at her white villa in Marbella, Spain 1985 / Bridgeman Images

UTD7106925: Botho Prince zu Sayn Wittgenstein Hohenstein as president of the German Red Cross in his office at the headquarters at Bonn, Germany 1994 / Bridgeman Images

UTD7106929: Princess Angela von Hohenzollern with her daughters Stephanie and Valerie at Munich, Germany 1975 / Bridgeman Images

UTD7106932: Princess Angela's villa at a suburb of Munich, Germany 1975 / Bridgeman Images

UTD7106937: Princess Angela von Hohenzollern after the divorce from Prince Ferfried von Hohenzollern at Munich, Germany 1975 / Bridgeman Images

UTD7106942: Princess Angela von Hohenzollern after the divorce from Prince Ferfried von Hohenzollern at Munich, Germany 1975 / Bridgeman Images

UTD7106947: Princess Victoria Louise of Prussia, Duchess of Brunswick Lueneburg, at her house in Brunswick, Germany 1974 / Bridgeman Images

UTD7106953: Princess Victoria Louise of Prussia, Duchess of Brunswick Lueneburg, in the living room at her house in Brunswick, Germany 1974 / Bridgeman Images

UTD7106962: Noble families visiting the celebration of Johann Georg Hansi von Hohenzolern's 50th birthday at Sigmaringen, Germany 1982 / Bridgeman Images

UTD7106964: Queen Silvia and King Carl XVI Gustaf of Sweden visiting the celebration of Johann Georg Hansi von Hohenzollern's 50th birthday at Sigmaringen, Germany 1982 / Bridgeman Images

UTD7106979: Dr Maximilian Count of Spee with son Wilhelm (left) at their poultry yard at Heltorf, Germany 1985 / Bridgeman Images

UTD7106982: Dr Maximilian Count of Spee with his wife Maria Theresia at one of their greenhouses at Duesseldorf Angermund, Germany 1985 / Bridgeman Images

UTD7106994: Dr Maximilian Count of Spee welcomes tourist groups at Heltorf castle in Duesseldorf Angermund, Germany 1985 / Bridgeman Images

UTD7107012: Per Edvard Lithander and his wife Xenia Princess of Prussia and son Sebastian, Germany 1974 / Bridgeman Images

UTD7107015: Per Edvard Lithander and his wife Xenia Princess of Prussia and son Sebastian, Germany 1974 / Bridgeman Images

UTD7107017: Per Edvard Lithander, husband of Xenia Princess of Prussia with son Sebastian, Germany 1974 / Bridgeman Images

UTD7107019: Enno Baron von Ruffin with his wife, singer Vicky Leandros at Basthorst mansion, Germany 1988 / Bridgeman Images

UTD7107033: Enno Baron von Ruffin with his wife, singer Vicky Leandros in front of Basthorst mansion, Germany 1988 / Bridgeman Images

UTD7107035: Enno Baron von Ruffin with his wife, singer Vicky Leandros at Basthorst mansion, Germany 1988 / Bridgeman Images

UTD7107045: Wedding of Christian Sigismund Prince of Prussia and Nina Countess von Reventlow at Gut Damp, here some photographer, Germany 1984 / Bridgeman Images

UTD7107051: Guests at the wedding of Christian Sigismund Prince of Prussia and Nina Countess von Reventlow at Gut Damp, Germany 1984 / Bridgeman Images

UTD7107056: Karl Gero Duke of Urach with Rough Collie Asta at Lichtenstein castle in Honau, Germany 1975 / Bridgeman Images