Rose O'Neal Greenhow was born in 1813 in Port Tobacco, Maryland and died in the year of 1864. Her real name is Maria Rosatta O'Neal. Rose was a confederate spy during the Civil War. In 1833 Rose married Dr. Greenhow with Dolley's blessing. Her husband Dr. Greenhow taught her history and gave her access to documents of the state. He was able to get her this information through his work at the state. Rose O'Neal Greenhow was on the side of the Confederates. She was loyal to the Confederates, and she was recruited as a spy. In the Civil War Rose O'Neal had a big role in the Confederate win against the Union in the First Battle Of Bull Run. Rose immediately used the different contacts and her talents to provide General P.G.T. Beauregard with information telling about the Unions route at the First Battle of Bull Run. The most significant contribution from Rose was giving information about the Union route to the Confederate side. She made a difference in the outcome of the war because this gave the Confederates a big advantage over the Union. Rose did her work very openly. Many of the people in Washington suspected her of being a spy. On August 23, 1861 she was put under house arrest. However, it did not last long. Rose still managed to wave her Confederate flag out of her window to send messages to the Confederate troops. On January 18 of 1862 she was put in Old Capitol Prison with her daughter "Little" Rose. They were then released from the prison on May 31 of 1862. Without Rose O'Neal Greenhow the First Battle of Bull Run may have turned out differently.