Lewis Powell, aka Lewis Paine Powell was charged with conspiracy and the attempted assassination of Secretary of State William Seward. Powell entered Seward's home the night of Lincoln's assassination. He stabbed and pistol-whipped 5 people in the house, miraculously all survived their wounds. Powell was found guilty by the court and hanged on July 7, 1865.

George Atzerodt George Atzerodt was charged with conspiring with Booth, his assignment was to kill Vice President Johnson. Atzerodt had rented a room in the same hotel Johnson was staying at, and asked many suspicious questions concerning the Vice President. However, he made no attempt to kill Johnson. Nevertheless, he was found guilty and hanged July 7, 1865.

David Herold Herold was charged with conspiracy, guiding Powell to Seward's home, and assisting Booth on his 12 days on the run after the assassination. Herold gave up at the Garrett farm when he and Booth were surrounded. He was found guilty and hanged July 7, 1865.

Mary Surratt Boardinghouse owner, Surratt was charged with conspiring with Booth, "keeping the nest that hatched the egg," and running errands for Booth and facilitating his escape. Mary Surratt was found guilty and hanged July 7, 1865.

Dr. Samuel Mudd Dr. Mudd was charged with conspiring with Booth and aiding the semi crippled assassin during his escape by sheltering him and setting his broken leg. Mudd was found guilty and sentenced to life. However he received a pardon from President Johnson in February of 1869. He then returned to his home in Maryland and lived there until his death from pneumonia on January 10, 1883.

Samuel Arnold Samuel Arnold was charged with being part of Booths earlier plot to kidnap President Lincoln. He was found guilty and sentenced to life. Like Dr. Mudd, he was pardoned by President Johnson in 1869. He lived until 1906.

Edman Spangler Edman Spangler was charged with helping Booth escape from Ford's Theater after the assassination. Spangler was found guilty and sentenced to 6 years. In 1869 he was pardoned by President Johnson. He worked for John Ford in Baltimore until 1873. He traveled to Dr. Mudd's home and lived on some land the Doctor had given him. He died on February 7, 1875.

John Surratt Jr. In the summer of 1867, John Surratt, having been captured in Egypt, faced civilian trial. The jury was unable to reach a verdict, with 8 jurors voting "not guilty" and 4 jurors voting "guilty". In August of 1867, Surratt was released from prison. Three years later he began a public lecture tour describing his association with the conspirators and proclaiming his innocence.

Shortly after 1:30 pm, the trap of the gallows installed in the courtyard of the Old Arsenal Building was sprung, and the four condemned prisoners fell to their deaths. Reporters covering the event reported that the last words from the gallows came from George Atzerodt, who said just before he fell, "May we meet in another world." Military personnel escorted Dr. Samuel Mudd, Michael O'Laughlen, Edman Spangler and Samuel Arnold to Fort Jefferson in Dry Tortugas, Florida. Two years later, a yellow fever epidemic swept through the prison, killing O'Laughlen and the prison's doctor, among many others. Upon the death of the prison doctor, Mudd assumed duty as chief medical officer at the prison. On March 1, 1869, Mudd and the other 3 imprisoned conspirators received an 11th hour Presidential pardon from Andrew Johnson. Samuel Arnold, the last surviving conspirator, who died in 1906, had written a detailed confession of his role in the conspiracy to kidnap President Lincoln.