“Harry and William had to go through that unbearable grief not in private but before the eyes – and camera lenses – of the entire world. He was just a kid and he hated it.
“Harry is fiercely protective of Archie and has promised him he will never have to go through that. Of course Meghan, who has lived a large part of her life in front of cameras, agrees wholeheartedly.
“He’ll basically protect Archie with his life.”
The news comes after the royal couple faced public backlash for choosing to host Archie’s christening behind closed doors, despite the huge public funding that goes into maintaining their lifestyle.
Even the identities of the godparents were kept a secret, with just a couple of carefully posed pictures released via the couples Instagram account just hours after the ceremony.
“Harry knew he would get it in the neck for not inviting the cameras in but he put Archie first – what father wouldn’t?” the insider continues.
“And those people having a go at him should step off an consider for a second what they would do if it was their kid.
"Harry has pulled on a uniform and served his country, he’s an outstanding diplomat for Great Britain and he has sacrificed a normal private life to do so. He just wants the best for Archie.”
A family photo inside the castle’s Green Drawing Room shows Harry and Meghan sitting with their child alongside the Duchess of Cornwall and the Duchess of Cambridge.
Standing behind them are the Prince of Wales, Meghan’s mother Doria Ragland, the Duke of Cambridge and the sisters of the late Diana, Princess of Wales, Lady Jane Fellowes, Lady Sarah McCorquodale.
The Archbishop of Canterbury, Justin Welby conducted the ceremony while some members of the St George’s Chapel Choir, a choral group who performed at Harry and Meghan’s wedding, sung during the christening.