Princess Louise Sophie of Schleswig-Holstein-Sonderburg-Augustenburg
Louise Sophie was a daughter of Frederick, Duke of Schleswig-Holstein, and his wife Adelheid of Hohenlohe-Langenburg. Her older sister Augusta became Empress of Germany as the wife of Kaiser Wilhelm II. In 1889, Louise Sophie married Prince Friedrich Leopold of Prussia with whom she had four children. She often represented her sister the Empress at social engagements and visits to hospitals. Her memoir, Behind the Scenes at the Prussian Court, was published in 1937.