John I of France was born on November 15, 1316 and died on November 19. He was king for all four days of his life, and he is the youngest person ever to hold the throne.
France once had a king who reigned for four days — his entire lifeJohn I of France, called the Posthumous, was born on November 15, 1316, and died on November 19, 1316. He's the youngest person ever to be king of France, the…boingboing.net