Princes William, Harry, Princess Diana
Princess Diana was more protective of Prince Harry than Prince William. Pictured: Princes William, Harry, Princess Diana applaud during the Wales vs France Five Nations Cup match at Cardiff Arms Park on February 1, 1992. Getty Images/Jean-Pierre Muller/AFP

Princess Diana was reportedly more protective of Prince Harry than Prince William due to a poignant reason.

Years ago, the doting mom realized how challenging Prince Harry’s position was as the spare after she saw how he was treated differently from Prince William. In the book “Harry: Life, Loss, and Love” by Katie Nicholl, the author spoke with Princess Diana’s friend, Simone Simmons, about the late princess and her sons.

“I remember Harry complaining that when he and William were with the Queen Mother, that William was always the center of attention. William would be sitting next to the Queen Mother in a drawing room that dwarfed the pair of them, and Harry would be sitting at a distance from them keeping himself entertained,” she said.

And during one occasion, Prince Harry became visibly upset after he saw the butler bringing sandwiches for Prince William and the Queen Mother and not for him. This left Princess Diana feeling especially protective of her youngest son.

The different treatments that Prince William and Prince Harry received were also explained by Nicholl in her other book “William and Harry.” In 2010, she said that the Duke of Cambridge would oftentimes be invited to the Clarence House to see the Queen Mother and Prince Harry wasn’t asked to tag along.

As a young boy, Prince William excitedly told Prince Harry that he was off to see their great-grandmother, and he left his younger brother alone in the nursery. Upon seeing this, Princess Diana became aware that Prince Harry felt left out.

In related news, Prince William and Prince Harry have nothing but wonderful memories about their mom. In the special documentary “Diana, Our Mother: Her Life and Legacy,” Prince William said that Princess Diana was very informal and she really enjoyed the laughter and fun.

Prince Harry, on the other hand, said that Princess Diana was the best mom in the world and said that she was one of the naughtiest parents.