Nancy J. Buckingham, borned on 10 August 1924, and John Sawyer, borned in 4 October 1919, married in 1949, they had a son, David, and a daughter, Helen. They formed one of the most popular writting-team marriage. Their first books were published under her maiden name Nancy Buckingham since 1967, are classical gothic novels. In 1970s, they started to used the pseudonyms: Christina Abbey and Erica Quest. In 1980, they sold her first novels to Silhouette, and they mixed their names to create the penname Nancy John. They also published one novel as Hilary London. The last novels that they published are a popular police series as Erica Quest, protagonized by the Detective Chief Inspector Kate Maddox. Their last novel was released in 1992, and John Sawyer passed away in 1994.

Nancy J. Buckingham Sawyer was the eighth elected Chairman (1973-1975) of the Romantic Novelists' Association, and now was one of its Vice-Presidents.

Book List in Order: 18 titles