who was “john wilkes booth"?
An American stage actor who assassinated President Abraham Lincoln
John Wilkes Booth
John Wilkes Booth (May 10, 1838 – April 26, 1865) was an American stage actor who assassinated President Abraham Lincoln at Ford's Theatre in Washington, D.C., on April 14, 1865. 
who played john wilkes booth in lincoln 2012 UNANSWERABLE
wiki:7725529
John Wilkes Booth [SEP] Introduction
John Wilkes Booth (May 10, 1838 – April 26, 1865) was an American stage actor who assassinated President Abraham Lincoln at Ford's Theatre in Washington, D.C., on April 14, 1865. A member of the prominent 19th-century Booth theatrical family from Maryland, and a noted actor, Booth was also a Confederate sympathizer who, denouncing President Lincoln, lamented the recent abolition of slavery in the United States. Originally, Booth and his small group of conspirators had plotted to kidnap Lincoln, but they later agreed to murder him as well as Vice President Andrew Johnson and Secretary of State William H. Seward, likewise to aid the Confederate cause.