The suggestion that Harry was James Hewitt’s son was the one thing that really angered the late princess. “It drove her wild with fury,” says TMR publisher and Diana’s official biographer, Andrew Morton. There is ample evidence that Harry, born September 15th 1984, was conceived over Christmas 1983, which the Royal Family then spent at …
http://www.themortonreport.com/celebrity/royals/who-does-prince-harry-look-like/