William H. Crook ( October 15 , 1839 &ndash; March 13 , 1915 ) was one of President Abraham Lincoln 's bodyguards in 1865 . After Lincoln 's assassination ( while Crook was off duty ) , he continued to work in the White House for a total of over 50 years , serving 12 presidents
Lincoln 's assassination
Assassination of Abraham Lincoln
William H. Crook