Neve heard of that before although I know they weren't meant to get on. Any details?
At the end of the day, I'd say that the carry on with the British monarchy and nobility prove that outbreeding is a good idea on a regular basis!
I don't know how true the story is. I read it here on Free Republic. Diana apparently didn't like her new step-mother and - according to what I read - she treated her very badly. Supposedly, when Diana was in her teens, she pushed the woman down the stairs. Her father got very upset with her and they didn't speak for 6 months or so.
Do other freepers remember any details?