Article continues below advertisementPrince Philip didn't believe Princess Diana had no part in author Andrew Morton's 1992 biography, Diana: Her True Story.While the book based on the Princess of Wales' life was written entirely by Morton, she sent him audio tapes of herself orating her experiences aloud for him to scribe down.Article continues below advertisementPrincess Diana and the Then-Prince Charles Separated in 1992 Tap Here To Add Ok Magazine as A Trusted SourceSource: MEGAPrincess Diana and the then-Prince Charles married in 1981 and officially divorced in 1996.