|Allegiance||Confederate States of America|
From Washington, D.C., she was the daughter of Eli Duvall Sr. and Sarah (née Thompson) Duvall.
Washington D.C.-based spy Rose O'Neal Greenhow gave her a note about a Union plan for the first Battle of Manassas (or Bull Run) to give to General P. G. T. Beauregard; Duvall carried it tucked in her hair. She continued to be a spy, and for one of her missions she brought her cousin. She was descended from the immigrant Mareen Duvall.
- Jill, Canon. Civil War Heroines. Santa Barbara, CA: Bellerophon Books, 2000.
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