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 Marie Cécile of Prussia Princess Marie-Cécile of Prussia (Marie-Cécile Kira Viktoria Luise; born 28 May 1942 in Cadinen, Kreis Elbing) is the daughter of Louis Ferdinand, Prince of Prussia, and his wife, Grand Duchess Kira Kirillovna of Russia. Her paternal grandparents were William, German Crown Prince, and Duchess Cecilie of Mecklenburg-Schwerin; maternally, she is a granddaughter of Cyril Vladimirovich, Grand Duke of Russia, and Princess Victoria Melita of Saxe-Coburg and Gotha.
Adélaïde of France (1732–1800) Marie "Adélaïde" de France, (23 March 1732 in Versailles – 27 February 1800 in Trieste), was a French princess, the fourth daughter and sixth child of King Louis XV of France and his consort, Marie Leszczyńska.