Maj. Gen. Daniel Sickles - Colorful and controversial American politician and political general of the Civil War. Prior to the war, killed his wife's lover a relative of Francis Scott Key - acquitted with the first use of temporary insanity as a legal defense in U.S. history. Lost his leg at the Battle of Gettysburg.
On March 30, 1981, Hinckley left Jodie Foster a note telling her that he planned to win her love by assassinating U.S. President Ronald Reagan. Later that day, Hinckley did drive to Washington, D.C., where he was able to shoot the president and several members of his entourage. President Reagan survived the shooting, and Hinckley has been institutionalized ever since due to a "Not Guilty by Reason of Insanity" defense.
Just 10 years after President Lincoln's assassination, his widow, Mary Todd Lincoln, was charged with insanity and put on trial in Chicago. The accuser was her only surviving son, Robert Lincoln. The trial was held on May 19, 1875 and she had received no prior warning or chance to organise a defense. The jury deliberated for only 10 minutes and she was institutionalized at Bellevue Place Asylum. Mary was released after less than 4 months but mother and son were never truly reconciled.