Prince Frederick of Prussia Prussian prince (1911-1966) (1911–1966) Parents Duchess Cecilie of Mecklenburg-Schwerin Wilhelm, German Crown Prince Children Prince Rupert of Prussia Prince Nicholas of Prussia Princess Victoria Marina of Prussia Prince Andreas of Prussia Princess Antonia of Prussia Siblings Prince Wilhelm of Prussia Princess Cecilie Viktoria of Prussia Prince Hubertus of Prussia Louis Ferdinand, Prince of Prussia Princess Alexandrine of Prussia Partners Brigid Guinness
