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.
Marie Eleonore of Cleves Duchess Marie Eleonore of Cleves (16 June 1550 – 1 June 1608) was a Duchess consort of Prussia as the wife of Albert Frederick, Duke of Prussia. She was the eldest child of William, Duke of Jülich-Cleves-Berg and Maria of Austria.