When naming their only daughter, the Prince and Princess of Wales (then the Duke and Duchess of Cambridge) wanted to honor William's late mother, Princess Diana. [Royal commentator Richard Kay told “Vanity Fair” magazine, “If it had been a first name, I think it would have been terrible for the child. He would have been constantly compared to Princess Diana, and William would not have wanted that.”

Instead, upon their birth on May 2, 2015, William and Kate chose the name Charlotte Elizabeth Diana in honor of both Princess Diana, who died in a 1997 car accident when William was 15, and Queen Elizabeth, Charlotte's great-grandmother, who She chose the name Charlotte Elizabeth Diana. Her first name, Charlotte, is also the feminine form of Charles, as was her grandfather, King Charles (then Prince Charles), and Charlotte is the middle name of her aunt, Pippa Middleton Matthews.

Using Diana as one of Charlotte's two middle names “is in this way a tribute to her mother and a way to ensure that Diana will always be remembered,” Kay added. Princess Diana's other son, Prince Harry, also chose to honor Princess Diana as the middle name of his daughter with wife Meghan Markle, naming her Princess Lilibet Diana upon her birth on June 4, 2021.

At the time of Charlotte's birth nine years ago, Princess Diana's friend Simone Simmons told the Daily Express that the late Princess Diana would have been “overjoyed” that William and Kate had chosen to name their only daughter.

“It's a way for William to honor his mother's memory. 'A way to ensure that Diana's legacy lives on. This way she will never be forgotten.”

Simmons added, “When Diana was alive, William promised Diana that he would restore HRH to her when he became king. This is his way of doing it."

In fact, the ‘Diana’ is a ”very good thing.

Indeed, Princess Charlotte Elizabeth Diana was given the title of Her Highness at her birth.