Prince Harry and Meghan Markle's departure in 2020 sparked a lot of turmoil in the royal family, and one of the couple's pranks was greatly felt by the late Queen Elizabeth.
The name of the Sussexes' daughter, Princess Lilibet, has long been a source of dispute, with the grandmother apparently upset about the choice.
Previously, Robert Hardman said in his book that the late Queen was "as angry as ever" when Harry and Meghan released a statement declaring the grandmother was "supportive" of the couple's decision to give their daughter her childhood moniker.
Lilibet Diana Mountbatten-Windsor is the name of Harry and Meghan's daughter, born on June 4, 2021.
While the Palace did not respond to the BBC's story, additional details have surfaced about what happened when Harry and Meghan visited with the Queen.
A royal insider told DailyMail that Harry and Meghan merely informed the Queen of their plans.
"Harry and Meghan delivered this to the Queen as: 'We'll call her Lilibet. Isn't it great?" the insider said. "The palace version was that they didn't ask."
They went on, "The Queen was requested to support their account of events, which contradicted her own. She wasn't upset with using the name Lilibet; it was how it was handled."
When the BBC stated that the Sussexes had "never asked" for the late Queen's permission to use "Lilibet," the Duke and Duchess of Sussex wrote a threatening letter calling the accusation "false and defamatory."