Mary Anna Randolph Custis Lee (October 1, 1807 – November 5, 1873) was the wife of the Confederate general Robert E. Lee and the last private owner of Arlington House. She was the daughter of George Washington Parke Custis, who was the grandson of Martha Washington, the wife of George Washington. Lee was a highly educated woman, who edited and published her father's writings after his death.
Mary married Robert E. Lee in 1831 at her parents' home, Arlington House, in Virginia. The couple had seven children. Although she sometimes lived with Lee when he was assigned elsewhere, she preferred to reside at Arlington House with her parents. Robert E. Lee resigned from his commission with the U.S. Army to serve his home state of Virginia during the Civil War; he eventually commanded the Confederate Army of Northern Virginia.