The birth certificate was changed in June 2019, with “Rachel Meghan” removed to leave just “Her Royal Highness the Duchess of Sussex”. Royal expert Ingrid Seward described the move as “unprecedented”.
The royal author suggested the Sussexes could have changed the birth certificate to do something different to the Duke and Duchess of Cambridge, who have included Kate’s name on their children’s documents.
Ms Seward told : “For a royal to change a birth certificate is unprecedented but to remove forenames is remarkable.
“Perhaps this is another sign they were desperate to do something different to the Cambridges.”
Lady Colin Campbell, who spotted the amendment, added: “It is extraordinary and raises all kinds of questions about what the Sussexes were thinking.”
The change came amid growing rumours of a rift between the brothers and their wives.
The move could also be seen as a nod to Princess Diana, who used “Her Royal Highness the Princess of Wales”.
Archie was born on May 6 2019 and his birth was registered later that month on May 17.
Former actress Meghan and Harry announced plans to quit as senior working royals in January 2020 and are now living in California.
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7.50am update: Charles giving William ‘much more input’ to prepare him as future king
Prince William has “much more input” as Prince Charles “realises that his own reign will be a shorter one”, according to a royal aide.
A source told the Daily Mail: “He’s giving William much more input. He realises that his own reign will be a shorter one than his son’s, and therefore it is crucial that William is involved in all long-term planning.”
They added: “They have been spending more time together and are much more aligned.
“Both are more comfortable in their own skin – and with each other.”
7.30am update: Princess Eugenie has ‘chosen school for child’, sources claim
Princess Eugenie, who announced she was pregnant last September, has already booked her future child a school place, it has been claimed.
According to the Mail on Sunday, the royal has reserved a place at Marlborough College, which she attended as a student.