Harper Lee
Harper Lee was the woman who wrote To Kill A Mockingbird. She never married nor had kids. She lived a rather private life before she passed away a few years ago. Her biographer, Marja Mills, said that the author used to go out with people. However, it never turned into anything serious.

Harper Lee
Janet Napolitano
Janet Napolitano once served as the Governor and Attorney General of Arizona. After this role, she was also the US Secretary of Homeland Security. She has been the President of the University of California system since 2013. What a resume! It looks like she picked her career over a spouse. Good for her.

Janet Napolitano