Princess Margaret was born on August 21, 1930, four years after the birth of her sister, the future Queen Elizabeth II. At the time, she was titled Princess Margaret of York, as her father was only a second son and her uncle Edward was expected to be king. Of course, in 1936, Edward became Edward VIII but quickly abdicated to marry Wallis Simpson, leaving Margaret's father to become George VI and Margaret to simply become "The Princess Margaret."