On Sep 19, 1840, Marie Lafarge became the first person convicted largely on direct forensic toxicological evidence http://yovisto.blogspot.it/2013/09/madame-lafarge-first-victim-of-marsh.html
On Good Friday, April 14, 1865, as the American Civil War was drawing to a close, well known stage actor and Confederate spy John Wilkes Booth shot United States President Abraham Lincoln in the Presidential booth of the Ford's theatre in Washington, D.C. And Lincoln should not be the last US president to be assassinated. He was followed by James A. Garfield, William McKinley, and John F. Kennedy, and if we also take attempts and plots into account, we will end up with more than 20 sitting or former presidents. But, Abraham Lincoln, as being the 16th president of the United States, was the first and besides Kennedy the most famous.
Today 219 years ago, the 'martyr of the revolution', Jean Paul Marat was assassinated by Charlotte Corday, a 24 year old girl. The physician, natural scientists, and political activist was a member of 'the Mountain', a group active during the French Revolution, and author of the radical newspaper 'L'Ami du peuple'.