Anne Clarissa Eden, Countess of Avon, née Spencer-Churchill, was born in London, England, the daughter of Major Jack Spencer-Churchill and his wife Lady Gwendoline Bertie. Winston Churchill was her paternal uncle; other members of her famous family included her grandparents Lord Randolph Churchill, Chancellor of the Exchequer, and his wife Jennie Jerome. She was a debutante in 1938, and briefly studied art at the Slate School and in Europe. During World War II, she worked in the Foreign Office, where her future husband Anthony Eden served as Foreign Secretary, and after the war at London Films for producer Alexander Korda. In 1952, she married Eden, who was Prime Minister from 1955 to 1957. She become Lady Eden when her husband was knighted, and then Countess of Avon in 1961 when he was made 1st Earl of Avon. She published a memoir, Clarissa Eden: From Churchill to Eden, in 2007.