Grace Patricia Kelly (1929-1982) was an American actress and Princess consort of Monaco. In April 1956 Kelly married Rainier III, Prince of Monaco, and became styled as Her Serene Highness The Princess of Monaco, and was commonly referred to as Princess Grace.
She and Prince Rainier had three children: Caroline, Albert, and Stéphanie. She also retained her American roots, maintaining dual US and Monégasque citizenships. She died on September 14, 1982, two months before her 53rd birthday, when she lost control of her automobile and crashed after suffering a stroke. Her daughter Princess Stéphanie, who was in the car with her, survived the accident. In June 1999, the American Film Institute ranked her #13 in their list of top female stars of American cinema. (source)Thank you Mary!