Born in Croyden in 1903, Constance Mary Lockett was the daughter of a City accountant, and had three siblings. She was educated at Croyden Secondary School (currently Selhurst Grammar School), and briefly attended art school before becoming a photographic colorist. She was married to estate agent Henry Victor White when she was twenty-two years old, and had one daughter, born in 1928. White's first book, The Adventurous Three, was published in 1939, and was based upon stories the author told to her daughter, Jeanette. After the interruption of the Second World War, White returned to writing, publishing forty-three more books from 1947 to 1971.