Three other Lincoln conspirators were convicted with Mudd. Samuel Arnold and Michael O’Laughlen, former Confederate soldiers from Baltimore, received life sentences for helping Booth concoct a ...

The four remaining conspirators — Edman Spangler, Michael O’Laughlen, Samuel Arnold and Samuel Mudd — were sentenced to life in prison. In 1869, Johnson pardoned Mudd, who had set Booth’s ...

eight conspirators were charged. These suspects included Mary Surratt, Lewis Powell, George Atzerodt, David Herold, Samuel Mudd, Michael O’Laughlen, Edmund Spangler and Samuel Arnold.