Full Name: Rose O'Neal Greenhow Born: 1817 Place of Birth: Mongomery County, Maryland North or South: South Died: October, 1864 Place of Death: Buried in Oakdale Cemetery, Maryland Interesting Facts: She was a spy. She sent a secret message to General Pierre G.T. Beauregard which caused him to win the battle of Bull Run. She developed a close association with Lieutenant Colonel Thomas Jordan of Virginia, a former quartermaster in the United States Army who was in the process of developing a Confederate spy network in the federal Capital. From Jordan, Greenhow learned how to use a 26-symbol cipher, and began her connections with the prominent Unionists for the purpose of eliciting information that she then transmitted in code to relevant figures in the Confederacy.