The sweet nickname Princess Diana gave Prince William after visiting Australia

The Princess of Wales, Princess Diana, and her sons William and Harry on a ski holiday to Switzerland. Prince Charles is to join them after he has completed some engagements. Picture taken 7th April 1995. (Photo by Kent Gavin/Mirrorpix/Getty Images)
Princess Diana and her sons William and Harry on a 1995 ski holiday to Switzerland. Diana had a close relationship with her children until her death in 1997. (Getty Images)

Royal fans can finally watch the first instalment of the sixth and final series of the highly acclaimed Netflix series The Crown. The first four episodes is now available to watch on Netflix, with six final episodes airing on 14 December.

The first part of the series focuses on the final weeks of Princess Diana’s life, as well as the aftermath of her death and its impact on the royal family. The role of Diana is reprised by Elizabeth Debicki, who played the late princess in the previous series of The Crown, while the roles of teenage Princes William and Harry will be played by Rufus Kampa and Luther Ford respectively.

By the time of Diana’s death, William was 15 and Harry was 12. Although they were young, both William and Harry have spoken often and fondly about their mother’s memory and her influence in their lives even as adults.

In a 2007 joint interview with NBC alongside Harry, the Prince of Wales - then the Duke of Cambridge - revealed the sweet nickname his late mother gave him when they visited Australia. At the time, William was two years of age and King Charles, formerly the Prince of Wales, and Diana were still married.

Diana, Princess of Wales  (1961 - 1997) and Prince William visit the Natural History Museum in London, April 1992. Diana is wearing a green suit by Moschino. (Photo by Princess Diana Archive/Getty Images)
Diana had an adorable nickname for William, which she coined after their family visited Australia when he was two years old. (Getty Images)

Speaking to journalist Matt Lauer, William confirmed that he was given the nickname "Wombat" during the trip. "I can’t get rid of it now. It began when I was two. I’ve been rightfully told because I can’t remember back that far. But when we went to Australia with our parents, and the wombat, you know, that’s the local animal. So I just basically got called that. Not because I look like a wombat. Or maybe I do."

Harry chimed in and explained that the reason the nickname "Wombat" stuck around for William was because he was still crawling on all fours even at the age of six. The Duke of Sussex joked: "You know what it was. He was still crawling at six. He still couldn’t walk. He was still, lazy."

Princess Diana, Princess of Wales, takes her sons Prince William and Prince Harry to The National History Museum in London to the see Dinosaur Exhibition. Picture taken 13th April 1992. (Photo by Kent Gavin/Mirrorpix/Getty Images)
The months and weeks leading up to Diana's death in 1997 will be detailed in the forthcoming final series of The Crown. (Getty Images)

Meanwhile, it has been reported that William’s own children Prince George, Princess Charlotte and Prince Louis call their father "Pops". Following a royal engagement during which she met the Princess of Wales, Fiona Sturgess, a fan of the royal family, told reporters: "Kate said that William was playing football with the children last night and one of them said, I think it was George, 'Are you playing football tomorrow, Pops?'"

The forthcoming series of The Crown will likely also explore Diana’s close relationship with both her sons. In the trailer, released on 26 October, shows a scene in which Diana and William are riding in her car as she drives through the English countryside with the top down. Together, they sing in the car. Another scene shows William on the phone with Diana while Harry sits opposite his elder brother. William asks: "Mummy, you okay?" Diana replies: "I’m okay. It’s just… It has all been a bit mad recently."

(FILES) Princess Diana (L), Prince Harry, (C) and Prince William (R) gather for the commemorations of VJ Day, 19 August 1995, in London. Prince William turned 25 Thursday 21 June 2007, and in doing so became entitled to part of the multi-million pound (euro, dollar) inheritance left to him by his late mother, princess Diana. The second in line to the throne is now allowed access to the income accrued on the 6.5 million pounds he was left in his mother's will after she died 10 years ago in a car crash in Paris. AFP PHOTO/JOHNNY EGGITT/FILES (Photo credit should read JOHNNY EGGITT/AFP via Getty Images)
Prince William and Prince Harry have spoken often about their fond memories about their mother. (Getty Images)

The car ride that William and Diana share in The Crown appears to be in reference to a story William previously told about the car journeys they used to take together. In 2021, he recorded an episode for Apple Fitness+’s Time to Walk series and revealed that Diana would play "all sorts of songs" for him and Harry to ease their worries about going to boarding school.

"One of the songs I massively remember and has stuck with me all this time - and I still, to this day, still quite enjoy secretly - is Tina Turner’s The Best because sitting in the backseat, singing away, it felt like a real family moment," William said. "My mother, she’d be driving along, singing at the top of her voice. And we’d even get the policeman in the car, he’d be occasionally singing along as well."

Watch: The Crown: Season 6 | Part 1 Trailer | Netflix

Read more about The Crown: