S. Ann Thacker Lewis was born in Greensboro, North Carolina, on 15 October 1938. She graduated from high school at Curry School in 1957 and then attended Women’s College of the University of North Carolina (now UNCG), earning a degree in physical education.
Lewis joined a WAVES recruit program while in college. After graduating, she completed Officer Candidate School at Naval Station Newport, Rhode Island. She was chosen to be a legal officer and attended Naval Justice School in Newport, Rhode Island, and was then assigned to Long Beach, California. In addition to defense counsel and prosecutorial duties there, she also worked as a separations officer, public information officer, communications watch officer, and in registered publications. In 1963, Lewis received orders to Wahiawa, Hawaii, where she served as a legal officer and trainer. She met her husband, Chuck Lewis, on a beach in Hawaii, and resigned her commission in January 1965 due to pregnancy.
Lewis later earned a masters’ degree in counseling and worked for thirty years as a school counselor.