10. A Conspiracy Too Many Turns Out To Be Catastrophic

King Edward IV pardoned his younger brother George and restored him to royal favor. However, George was catastrophically addicted to intrigues and plotting. Worse: he was not very good at concealing it, and kept getting caught. In 1478, George once again betrayed his elder brother, and was caught plotting against the king.
Finally fed up with his wayward sibling, Edward IV ordered George arrested, jailed him in the Tower of London, and had him tried for treason. Personally conducting the prosecution before Parliament, Edward secured a conviction and a Bill of Attainder against George, who was condemned to death. On February 18th, 1478, George Plantagenet, 1st Duke of Clarence, was executed by being dunked into a butt, or big barrel, of Malmsey wine, and forcibly held under its surface until he was drowned.



