Princess Diana was given a unique nickname by her family even before she started dating Prince Charles.

The Princess of Wales’ former royal chef, Darren McGrady, revealed that Prince William and Prince Harry’s mom used to be called “Duch” because she acted like a Duchess when she was just a young girl.

And when Princess Diana joined the royal family, the nickname “Duch” stuck on.

“I remember Sandringham one Christmas. She came into the kitchen with Sarah Ferguson and Fergie called her ‘Duch…’ I was surprised because I knew she was a Princess and asked her why she had called her that,” McGrady said.

Before marrying Prince Charles in 1981, Princess Diana expressed doubts about her decision to tie the knot with the future King. In her correspondence with her two older sisters, Princess Diana was once again referred to as “Duch.”

“She’d told her sisters the day before that she couldn’t go through with it now she knew that Charles was having that last lunch with Camilla. But they said, ‘Well, bad luck Duch, your face is on the tea-towels so you’re too late to chicken out,’” royal expert Ingrid Seward said.

After Princess Diana tied the knot with Prince Charles, the royal couple sent out thank you cards to those that sent them their well-wishes. The cards were signed with Prince Charles’ name and Princess Diana’s nickname.

Meanwhile, Princess Diana’s “Duch” nickname was quite surprising because even though she was known as the Duchess of Cornwall and the Duchess of Rothesay after marrying Prince Charles, her title as the Princess of Wales was the one that stuck with fans.

Whenever she’s out in public, Princess Diana was called as such or as the Princess of Wales. She also inherited the nickname Lady Di or the People’s Princess because of the impact that she had on royal fans and the public in general.

How Princess Diana Inherited This Nickname From Family Before Marrying Prince Charles Princess Diana seen during the official Madame Tussauds’ wax effigy of HRH Prince William is unveiled at London’s Marylebone Road tourist attraction on August 3, 2005 in London, England. photo: Getty images/MJ Kim