Prince Ludwig Rudolph of Hanover German prince (1955–1988) (1955–1988) Parents Princess Ortrud of Schleswig-Holstein-Sonderburg-Glücksburg Ernst August, Prince of Hanover Children Otto Prinz von Hannover Siblings Alexandra, Princess of Leiningen Princess Olga of Hanover Marie of Hanover Prince Heinrich of Hanover Ernst August, Prince of Hanover Christian Freiherr von Humboldt-Dachroeden Partners Isabella von Thurn und Valsássina-Como-Vercelli