Anna Farquhar (after marriage, Anna Bergengren; pen name, Margaret Allston; December 23, 1865 – 1945) was an American author and editor. A Singer's Heart (1897) and The Devil's Plough (1901) were published under her maiden name, "Anna Farquhar", but she used a pseudonym, "Margaret Allston", thereafter. Anna planned to be a professional singer, but her health failed while studying in Boston, London and Paris. Farquhar wrote for the Boston Transcript, Detroit Free Press, and Springfield Republican during her musical career and served as assistant editor of National Magazine.
https://en.wikipedia.org/wiki/Anna_Farquhar