Diana Churchill was a British officer and the oldest daughter of former Prime Minister of the United Kingdom Sir Winston Churchill. She served the ‘Women’s Royal Naval Service’ during the ‘World War II.’ She was involved in many of her father’s election campaigns and even accompanied him to the Parliament, when he presented his first budget. She also took part in her brother Randolph Churchill’s political campaigns, including the campaign of 1935 where she met Duncan Sandys whom she would go on to marry. She suffered a nervous breakdown in 1953, which had a profound effect for the rest of her life. She died from an overdose of barbiturates in 1963. Investigations revealed that she had taken her own life. Her mortal remains were buried at ‘St Martin’s Church’ near Woodstock, Oxfordshire.