Gayle King is a close friend of both Meghan Markle and Oprah Winfrey.
The clarification comes soon after it emerged that their marriage certificate has the date of their public wedding.
Former chief clerk at the Faculty Office Stephen Borton said the Duchess of Sussex was clearly "confused" and "misinformed."
In the infamous 1995 Panorama interview, Princess Diana spoke about her "crowded" marriage with Prince Charles.
Royal experts discuss Queen Elizabeth II's relations with her sons in new documentary, which also features now-declassified documents.
The Duke of Cambridge thinks his brother's statement about his life as a royal is "way off the mark."
There are still more than 90 minutes of unused footage from Harry and Meghan's interview, which ITV wants to broadcast.
The investigator said he compiled a 90-page report on the Duchess of Sussex when he was hired by The Sun.
There were reportedly "genuinely mixed emotions and deep sorrow and shock" in the palace after the interview.
Princess Anne is known to have a great sense of humour and often finds herself in funny situations.
William is also worried that his and other family members' private conversations with his brother will be "plastered on US TV."
The Queen has not watched the interview herself, but palace aides have "thoroughly briefed" her about it.
Ranvir Singh and Phillip Schofield questioned the purpose of further publicity for the Duke and Duchess of Sussex after their Oprah interview.
Gayle King said the Duke and Duchess of Sussex would not have released the interview had the Duke of Edinburgh died.
Prince Phillip has made a number of embarrassing tone-deaf and racially insensitive comments in the past.
No one in the Royal Family has talked to Meghan Markle yet after the Oprah interview.
There have been reports that Meghan is meeting with Democrat operatives to discuss a possible run in the 2024 presidential elections.
Meghan's claims of not having prior knowledge about royals have been contested by several, including two of her childhood friends.
"She's clearly paying attention to her publicity," TV show host Meghan McCain said.
Kate shared an old picture with her mother, Carole Middleton, on the occasion of Mother's Day in the UK on Sunday.
"I pray for forgiveness and healing for them so that they can use this as a teachable moment for us all," Michelle Obama said.
German news editor Laura Schäfer said Kate Middleton "reacted wrongly" several times in the wake of the interview.