Princess Marie-Cécile of Prussia, is the daughter of Louis Ferdinand, Prince of Prussia, and his wife, Grand Duchess Kira Kirillovna of Russia, maternally, she is a granddaughter of who was later titled, Grand Duchess Victoria Feodorovna of Russia, who is the he third child and second daughter of Alfred, Duke of Saxe-Coburg and Gotha?
Princess Victoria Melita of Saxe-Coburg and Gotha Princess Victoria Melita of Saxe-Coburg and Gotha and Edinburgh , later Grand Duchess Victoria Feodorovna of Russia (25 November 1876 – 2 March 1936) was the third child and second daughter of Alfred, Duke of Saxe-Coburg and Gotha, and Grand Duchess Maria Alexandrovna of Russia. She was a granddaughter of Queen Victoria of the United Kingdom and Emperor Alexander II of Russia.
Princess Feodora of Hohenlohe-Langenburg Princess Feodora Victoria Adelaide of Hohenlohe-Langenburg (7 July 1839 – 10 February 1872) was a daughter of Ernst I, Prince of Hohenlohe-Langenburg and Princess Feodora of Leiningen. By her marriage to Georg of Saxe-Meiningen, she would become Duchess of Saxe-Meiningen upon his succession in 1866.