A Palace source has insisted that Price Harry and Meghan Markle did not ask the Queen to name their daughter Lilibet.
The source told the BBC that despite reports that the couple asked the Queen if they could name their daughter Lilibet, they did not.
In turn, a spokesperson for the Duke and Duchess of Sussex has insisted that they would not have used the name if the Queen had been anything but supportive of the idea.
Instead, they said that the Queen was the first person they spoke to before making the announcement.
The pair's spokesperson said: "The duke spoke with his family in advance of the announcement - in fact, his grandmother was the first family member he called.
"During that conversation, he shared their hope of naming their daughter Lilibet in her honor. Had she not been supportive, they would not have used the name."
Queen Elizabeth, who has been nicknamed Lilibet since she was a child, is pictured below as a young girl.
While a palace source has insisted that the Queen did not know about the couple's daughter's name, a source close to the Sussexes also told the BBC that Harry "would have mentioned the name" before his daughter's birth.
The Times also reported that Harry told the Queen about the name.
Lilibet is the Queen's 11th great-grandchild, and her middle name, Diana, is a tribute to Prince Harry's late mother.
However, she is not the only royal youngster whose name is a tribute to Diana, and Prince William and Kate Middleton's daughter Charlotte also has Diana as a middle name, as well as Elizabeth in tribute to the Queen.
Harry and Meghan said that they were not planning to have any more children have Lilibet during their bombshell interview with Oprah earlier this year.
The couple's relationship with the Royal Family has been fraught since then, with Meghan making an allegation of racism within the Royal Family after an unidentified member speculated as to the color of Archie's skin prior to this birth.
Lilibet "Lili" Diana Mountbatten-Windsor was born at a Santa Barbra hospital on Friday, June 4.
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