Princess Ortrud of Schleswig-Holstein-Sonderburg-Glücksburg Hanoverian princess (1925–1980) (1925–1980) Parents Princess Hertha of Ysenburg und Büdingen Prince Albrecht of Schleswig-Holstein-Sonderburg-Glücksburg Children Prince Heinrich of Hanover Princess Olga of Hanover Prince Ludwig Rudolph of Hanover Alexandra, Princess of Leiningen Marie of Hanover Ernst August, Prince of Hanover Siblings Johann Georg Prinz zu Schleswig-Holstein-Sonderburg-Glücksburg Prince Friedrich Wilhelm of Schleswig-Holstein-Sonderburg-Glücksburg Prince Friedrich Ferdinand of Schleswig-Holstein-Sonderburg-Glücksburg Marie Luise Prinzessin zu Schleswig-Holstein-Sonderburg-Glücksburg Partners Ernst August, Prince of Hanover