Society hostess. She married Winston Churchill's son during World War II but soon had an affair with the American special emissary Averell Harriman, whose wife had remained in New York. After years in Hollywood and New York as the wife of the famous Hollywood producer Leland Heyward, she eventually married Harriman, by then a widower, became a celebrated Washington hostess and Democratic Party fundraiser. Following her husband's death, she was appointed by President Clinton as ambassador to France but died swimming in the Embassy pool.