1865, Washington Navy Yard, D.C., USA : Assassination of President Lincoln. Lewis Powell aged 21 (aka Lewis Payne or Paine, 1844 - 1865), a conspirator, in manacled aboard the monitor USS Saugus. Lewis Thornton Powell (April 22, 1844 July 7, 1865), attempted unsuccessfully to assassinate United States Secretary of State William H. Seward, and was one of four people hanged for the Lincoln assassination conspiracy. On April 13, John Wilkes Booth, George Atzerodt and David Herold all met at Powell's room at the Kirkwood Hotel, where Booth assigned roles.