ROYAL FAMILY NEWSPrincess Diana's Brother Charles Spencer Shares 'My Least Favorite Day' on 29th Anniversary of Late Royal's Death While Announcing New Book
Charles Spencer reflected on Princess Diana’s death anniversary while announcing his new book about his sister.
Aug. 31 2026, Updated 2:56 p.m. ET
Princess Diana's brother, Charles Spencer, marked the 29th anniversary of her death with a heartfelt tribute while announcing his new book about her life.
"31 August. My least favourite day," Charles, 62, wrote on Instagram on Monday, alongside a photo of a flag flying at half-staff over Diana’s childhood home at Althorp House in the U.K.
Charles Spencer shared a photo of the flag at half-staff at Althorp House as he marked Princess Diana’s 29th death anniversary.
Charles Spencer shared a tribute to Princess Diana on the 29th anniversary of her death.
Diana died at age 36 in August 1997 after being involved in a car crash in Paris.
She left behind her sons, Prince William and Prince Harry, whom she shared with King Charles III.
Ahead of the anniversary, Charles announced Swan Song: Diana, My Sister, which will be released on September 22.
Charles Spencer Announced His New Book About Princess Diana
Charles Spencer announced his new book, 'Swan Song: Diana, My Sister,' for Princess Diana.
"The aim of this book is to tell the truth about Diana from her brother’s perspective, just as I attempted to do when speaking at her funeral," he said in a press release, per Us Weekly.
He added, "As with my eulogy, I want to speak on Diana’s behalf and do so in an openly positive way."
Charles also shared what he wants out of this book.
"I hope this book will be of interest to the many who still cherish the memory of Diana when she was alive," he said.
He continued, "I would be delighted if those too young to remember her in her heyday feel, after reading this, that they 'get' who she really was: a one-off, dynamic character, full of love, charisma and self-doubt, who gave life a h--- of a go, and left the world a far better place, despite exiting the stage while still so young."
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Charles Spencer Reflected on Princess Diana’s Funeral Eulogy
Princess Diana's brother Charles Spencer previously recalled writing the eulogy he delivered at her funeral.
During an October 2025 appearance on the "Rosebud" podcast, shared via Instagram, Charles recalled how he came to write the eulogy himself.
"I had a big, thick address book, and I thought, 'I want to find someone who’s going to make the speech for her.' And I got to 'Z' and I hadn’t found anyone," he said.
He revealed that he wrote the final speech "in an hour and a half."
The eulogy by Charles Spencer focused on protecting Princess Diana’s sons, Prince William and Prince Harry.
Per BBC UK, Charles' funeral oration centered on Diana’s two sons, who were 15 and 12 when they lost their mother.
"She would want us today to pledge ourselves to protecting her beloved boys William and Harry from a similar fate and I do this here Diana on your behalf," he said.
He added, "We will not allow them to suffer the anguish that used regularly to drive you to tearful despair."
