author
b. 1864
A British writer and biographer, she is best known for clear, accessible lives of major literary figures including Honoré de Balzac, George Sand, and Christina Rossetti. Her work helped introduce well-known European authors to English-language readers in the early 20th century.

by Mary Frances Sandars
Born in 1864 and active as an English author, Mary Frances Sandars wrote literary biographies and studies aimed at general readers. Reliable catalog and author-reference pages identify her as a writer and biographer, and list her lifespan as 1864–1934.
Her best-known books include Honoré de Balzac: His Life and Writings, George Sand, and a life of Christina Rossetti. The pattern across her published work suggests a strong interest in major 19th-century literary figures, especially French and English authors, presented in a readable and concise style.
Detailed personal information appears to be limited in the sources I could confirm, so this overview focuses on her published work and reputation as a biographer rather than adding uncertain biographical details.