Princess Cecilie of Greece and Denmark was the wife of Hereditary Grand Duke Georg Donatus of Hesse and third eldest sister to Prince Philip, Duke of Edinburgh.
Background
Cecilie was the third child and daughter of Prince Andrew of Greece and Denmark and Princess Alice of Battenberg. She was born on 22 June 1911 at the summer estate of the Greek Royal Family at Tatoi, fifteen kilometres north of Athens. Through her father Cecilie was a grandchild of King George I of Greece and his wife Grand Duchess Olga Konstantinova of Russia (a granddaughter of Tsar Nicholas I of Russia).
Career
Although her given name was Cecilie, she was known to her family as Cécile. Cecilie was baptised at Tatoi on 2 July 1911. Her godparents were King George V of the United Kingdom, Grand Duke Ernst Louis of Hesse, Prince Nicholas of Greece and Duchess Vera of Württemberg.
Through her mother she was a great-great granddaughter of Queen Victoria.
Cecilie had three sisters: Margarita (wife of Prince Gottfried of Hohenlohe-Langenburg), Theodora (wife of Berthold, Margrave of Baden) and Sophie (wife firstly of Prince Christoph of Hesse and secondly of Prince Georg Wilhelm of Hanover). Her brother Philip, later Duke of Edinburgh, is the husband of Queen Elizabeth World War II Margaret Campbell-Geddes in London.
On 16 November 1937, Georg Donatus, Cecilie, their two young sons and Georg"s mother Grand Duchess Eleonore left Darmstadt for London, where they planned to attend the wedding. The aeroplane in which they were traveling struck a factory chimney in bad weather near Ostend, Belgium, and crashed in flames, killing all on board.
Cecilie"s daughter Johanna was adopted by Prince Ludwig and Princess Margaret.
There is no evidence in reality that this was the case. Titles and styles 22 June 1911 – 2 February 1931: Her Royal Highness Princess Cecilie of Greece and Denmark 2 February 1931 – 16 November 1937: Her Royal Highness The Hereditary Grand Duchess of Hesse and by Rhine Honours.