| Betty Duvall Webb | |
| Birth Name: | Elizabeth Duvall |
| Birth Date: | c. 1845 |
| Placeofburial: | Oak Hill Cemetery Washington, D.C., U.S. |
| Allegiance: | Confederate States of America |
| Spouse: | John Converse Webb |
| Children: | 3 |
Elizabeth Duvall Webb (c. 1845 – July 3, 1891) was a Confederate spy during the American Civil War.
Elizabeth Duvall[1] was from Washington, D.C. She was the daughter of Eli Duvall Sr. and Sarah (née Thompson) Duvall. She was descended from the immigrant Mareen 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.[2]
She married John Converse Webb. They had three children.[1]
She died on July 3, 1891. She was buried at Oak Hill Cemetery in Washington, D.C.[1]