He is believed to be buried near the obelisk of his family -- probably with the ashes of his siblings but the grave is unmarked at the request of his family when he was buried.
John Wilkes Booth (May 10, 1838 – April 26, 1865) was a famous American stage actor who assassinated President Abraham Lincoln at Ford's Theatre, in Washington, D.C., on April 14, 1865. Booth was a member of the prominent 19th century Booth theatrical family from Maryland and, by the 1860s, was a well-known actor.