Rose O'Neal Greenhow, American spy (b. 1817)
Rose O'Neal Greenhow (1813– October 1, 1864) was a renowned Confederate spy during the American Civil War. A socialite in Washington, D.C., during the period before the war, she moved in important political circles and cultivated friendships with presidents, generals, senators, and high-ranking military officers including John C. Calhoun and James Buchanan. She used her connections to pass along key military information to the Confederacy at the start of the war. In early 1861, she was given control of a pro-Southern spy network in Washington, D.C., by her handler, Thomas Jordan, then a captain in the Confederate Army. She was credited by Jefferson Davis, the Confederate president, with ensuring the South's victory at the First Battle of Bull Run in late July 1861.

The government found that information was being leaked and the trail led to Rose Greenhow's residence. Greenhow was subject to house arrest; found to have continued her activities, in 1862 after an espionage hearing, she, with her daughter "Little Rose", was imprisoned for nearly five months in Washington, D.C. Deported to the Confederacy, she traveled to Richmond, Virginia, and began new tasks. Running the blockade, she sailed to Europe to represent the Confederacy on a diplomatic mission to France and Britain from 1863 to 1864. In 1863, she also wrote and published her memoir in London, which was popular in Britain. After her returning ship ran aground in 1864 off the coast of Wilmington, North Carolina, she drowned when her rowboat overturned as she tried to escape a Union gunboat. She was honored with a Confederate military funeral.

In 1993, the women's auxiliary of the Sons of Confederate Veterans changed its name to the Order of the Confederate Rose in Greenhow's honor, following publicity about her exploits in a TV movie the previous year.