Booth conceived a plan to kidnap Lincoln in order to blackmail the Union into resuming prisoner exchanges, and he recruited Samuel Arnold, George Atzerodt, David Herold, Michael O'Laughlen, Lewis Powell (also known as "Lewis Paine"), and John Surratt to help him. Surratt's mother, Mary Surratt, left her tavern in Surrattsville, Maryland, and moved to a house in Washington, D.C., where Booth became a frequent visitor.