Ethnicity: Nancy was born to parents who were both born in the United States
Spero was born in Cleveland, Ohio to parents who were both born in the United States. Her father — Henry Spero — had a business buying and selling printing presses and her mother — Sadie Susselman — helped with the business later in her life. In 1927 her family moved to Chicago, where she grew up.
She had one sister, Carol Newman.