It has been close to 90 years since the late Duke of Edinburgh ’s beloved sister, Princess Cecilie of Greece and Denmark, was killed while eight months pregnant in a plane crash that also claimed the lives of six others.

The accident in November 1937 marked a tragic end to the life of Prince Philip’s ‘favourite sister’, affectionately known as ‘Cecile’, whose demise was portrayed in traumatic scenes in The Crown Season 2.

Born in June 1911, Cecilie was the third of Princess Alice of Battenberg and Prince Andrew of Greece and Denmark’s five children. She had a happy childhood but also witnessed the Balkan Wars and the First World War, which had dramatic consequences and led to her family’s exile in Switzerland, and then in France.

In 1931, she married Georg Donatus, Hereditary Gr

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