The Jessie Scouts were irregular soldiers during the American Civil War on the side of the Union who frequently operated in the territory of the Confederate States of America.[1][2]

The unit was created by John C. Frémont and named in honor of his wife, rather than of a Colonel Jessie, who was himself a myth. [3]

[3] Bakeless, p. 212.
Bakeless, John (1997). Spies of the Confederacy. Courier Dover Publications. ISBN 0-486-29865-5.

https://en.wikipedia.org/wiki/Jessie_Scouts#cite_note-3