Lewis William Washington (November 30, 1812 – October 1, 1871) was a great-grandnephew of President George Washington, who is principally remembered as a hostage of abolitionist John Brown's raid on Harpers Ferry, Virginia and as a prosecution witness in the subsequent trial of Brown.
Lewis Washington was the son of George Corbin Washington, the grandson of William Augustine Washington, and a great-grandson of Augustine Washington, half-brother of George Washington.
Lewis Washington inherited Beall-Air near Halltown, West Virginia through his mother, Elizabeth, daughter of Thomas Beall.
He made his home at Beall-Air from 1840 until his death in 1871.