Mary Surratt

Mary was part of the plot to assasinate President Abraham Lincoln.

http://members.aol.com/RVSNorton/Lincoln18.html

http://www.law.umkc.edu/faculty/projects/ftrials/lincolnconspiracy/surrattm.html
http://www.surratt.org/su_hist.html
And of course there's a whole movement to find her innocent...

http://www.pelicanpub.com/civil-war/1565541855.htm