Princess Diana
Princess Diana allegedly withheld Harry’s sex from Charles, who reportedly hoped for a daughter, according to Ingrid Seward’s latest royal biography By Russ Quinlan - Princess Diana - Royal Visit to Halifax, Nova Scotia - June 1983, CC BY-SA 2.0, via Wikimedia Commons

Princess Diana knew she was expecting a boy during her 1984 pregnancy in Britain but withheld that information from Charles, royal biographer Ingrid Seward claims. Her account revisits Diana's recollections that the then-Prince of Wales wanted a daughter and did not know Harry's sex before his birth.

For context, Buckingham Palace announced Diana's second pregnancy in February 1984, following Prince William's birth in 1982. According to Seward's account, Diana knew the baby's sex from a scan but chose not to tell Charles because she understood his preference.

The claim appears in Seward's 2026 book, Catherine & Diana: The Inside Story of How the Princesses of Wales Shaped the Modern Monarchy. Published in September, it revisits a private decision Diana had previously described in recordings made for Andrew Morton's biography.

Those recollections are central to the story. They document Diana's version of events, rather than independently establishing what Charles knew or how he felt.

Princess Diana's Account of Keeping Harry's Sex Private

Seward writes that Diana withheld the information despite feeling particularly close to Charles before Harry's arrival.

'Oddly, despite the closeness she had felt with Charles before Harry's birth, she never told him she was expecting another boy,' Seward wrote.

The biographer says Diana knew Charles 'longed for a daughter.' Seward also attributes Diana's decision to her 'extreme vulnerability,' an interpretation of her state of mind rather than an independently established finding.

Diana's recorded recollections provide the underlying account. She said she knew from a scan that Harry was a boy and 'didn't tell him', while also describing Charles's wish for a girl.

The distinction is important. Seward's book revisits an existing claim, not a newly disclosed medical record or an official confirmation of the couple's private conversations.

Prince Harry was born on 15 September 1984 at St Mary's Hospital in Paddington, London, according to his official Royal Family biography. Diana's account suggests Charles did not know before the birth that their second child would be another boy.

It does not independently establish that he was surprised. That description would require an inference about his reaction, rather than simply reporting what Diana said.

Princess Diana Recalled Closeness Before Harry's Birth

Diana described the weeks before Harry's arrival as an unusually close period in her marriage. In recordings used for Morton's Diana: Her True Story, she called it 'the closest we've ever, ever been and ever will be.'

That recollection complicates any straightforward description of the pregnancy as a period of uninterrupted marital tension. Diana's own account placed closeness immediately before the birth alongside disappointment afterwards.

She recalled Charles's first response as 'Oh God, it's a boy,' followed by a remark about Harry's red hair.

These were remarks Diana attributed to Charles. The recordings preserve her recollection, not an independent recording of him saying those words.

The same distinction applies to an exchange Diana described at Harry's christening. She said Charles told her mother, Frances Shand Kydd, 'we're so disappointed, we wanted a girl.'

According to Diana, her mother responded that they should realise they were lucky to have a child who was 'normal.'

The woman in this account was Diana's mother, not Queen Elizabeth II. Diana also recalled that the exchange contributed to a deterioration in the relationship between Charles and Frances Shand Kydd.

'Ever since that day, the shutters have come down,' Diana said. 'That's what he does when he gets somebody answering back at him.'

Her words offered an interpretation of Charles's behaviour, rather than independent confirmation of his motives. IBTimes UK cannot independently verify the private conversations described.

The material provided contains no direct response from Charles or Buckingham Palace addressing these particular recollections. At the centre of the christening account remains Diana's description of an exchange between her husband and her mother.