The beloved Princess Diana of the British royal family has not been forgotten even 26 years after her tragic death. Her marriage to Prince Charles was far from happy, with their first public fight occurring during a pheasant hunt and both partners cheating on each other throughout their unhappy union. In November 1995, Princess Diana made history in a television documentary series “Panorama” where she candidly revealed intimate details about her life as a member of the royal family, including her struggles with postpartum depression and bulimia. She also admitted to cheating on Charles with army officer James Hewitt. This interview marked the end of her marriage, with Diana declaring that there were three people in the relationship – herself, Charles, and Camilla Parker-Bowles. The interview was conducted in secrecy and resulted in a tragic car accident two years later. Meanwhile, two significant inventions took place on November 20th – the yo-yo was patented by James L. Haven and Charles Hettrick in 1866 and Garrett Morgan received a patent for his three-command traffic sign in 1923.