Mary Ann Mann Cornelius (1829–1918), who wrote under the pen name Mrs. Mary A. Cornelius, was an American novelist, social reformer, and activist. Born in the mid-nineteenth century, she dedicated much of her life to progressive social causes, most notably the temperance movement. She served as the president of the Woman's Christian Temperance Union (W.C.T.U.) of Arkansas, demonstrating her leadership in regional reform efforts.
Beyond her temperance work, Cornelius was deeply committed to community welfare and animal advocacy. During her years living in Tacoma, Washington, she established a free reading room and a circulating library aimed at supporting local youth. Her philanthropic efforts also extended to animal welfare; she served as a director of the humane society in both Tacoma and Topeka, Kansas. She was also an active supporter of women's suffrage, aligning her literary and social endeavors with the broader women's rights movements of her era.
As an author, Cornelius produced a variety of novels and occult stories that reflected her diverse interests and moral outlook. Her published works include Little Wolf, Uncle Nathan's Farm, The White Flame, and Why? or A Kansas Girl's Query. Through her writing and public service, Cornelius left a legacy of civic engagement and literary contribution during a transformative period in American history.
