Princess Cecilie of Greece (1911-1937), known as Cecile, third child of Prince and Princess Andrew of Greece (Alice of Battenberg), wife of Hereditary Grand Duke Georg Donatus of Hesse & by Rhine who she married in 1931. Cecile is one of the four sisters of Prince Philip, Duke of Edinburgh. She was tragically killed, along with her husband, mother-in-law, two elder children and unborn child when the plane they were travelling in to the wedding of Georg Donatus's brother Ludwig, crashed into a factory chimney at Ostend.