Daniel M'Naghten

Daniel M'Naghten (sometimes spelt McNaughtan or McNaughton; 1813 – 3 May 1865) was a Scottish woodturner who assassinated British civil servant Edward Drummond while suffering from delusions of persecution. Tried for murder, he was found not guilty on the ground of insanity and committed to Bethlem Hospital. Following his trial and its aftermath, his name was given to the legal test of criminal insanity in England and other common law jurisdictions known as the M'Naghten rules.