Mary Anna Randolph Custis Lee was the great-granddaughter of Martha Custis Washington, step-great-granddaughter of George Washington, and daughter of George Washington Custis, the step-grandson and adopted son of George Washington. She was also wife of Robert E. Lee, the prominent career military officer who commanded the Confederate Army of Northern Virginia during the American Civil War. They married at her parents' home, Arlington House, in Virginia in 1831, and had seven children together; he predeceased her by three years.