Only one seems credible enough to be on the quarter. The Medal of Honor recipient for the civil war efforts.
It was a political Medal of Honor.
“Notably, the award was not expressly given for gallantry in action at that time, and in fact was the only military decoration during the Civil War. Walker is the only woman to receive the medal and one of only eight civilians to receive it. Her name was deleted from the Army Medal of Honor Roll in 1917 (along with over 900 other recipients); however, it was restored in 1977.”