On 15 May 1800, James Hadfield attempted to assassinate George III; he had come to believe that the second coming of Christ would be brought about by his own death, and therefore attempted to be judicially executed.
The Trial of Lunatics Act 1883 was the next development in the law, allowing the jury to return a verdict that the defendant was guilty, but insane at the time, and should be kept in custody as a "criminal lunatic" [REF].