Ingrid Seward, author of "My Mother and I," claims Meghan Markle is a major factor in Prince William and Prince Harry's ongoing feud, with trust issues preventing reconciliation between the brothers.

"Once all the formalities were over, we watched as the happy couple, and then the other members of the Royal Family, filed out of the chapel," Grant said in an excerpt published by The Telegraph. " When Prince Philip came out, he turned to the Queen and said, 'Thank fuck that’s over.'"