Prince Philip has passed away at the age of 99, after battling health problems for the last few years.
The Australian man who claims he is the secret son of Prince Charles and Camilla has shared even more "proof" of his royal links.
Queenslander Simon Dorante-Day, was born in the UK in April 1966 before being adopted by a family in Portsmouth, England, who had links to the Queen.
The 55-year-old claims he was concieved in 1965 by a 17-year-old Charles and 18-year-old Camilla.
He has shared multiple pictures comparing himself and his family to royal members, most recently uploading a new image of his son Liam next to a photo of the Queen in her 20s.
Speaking to 7News, Dorante-Day said there is one picture in particular that shows his similarity to the royals is undeniable.
Dorante-Day told the media outlet his belief in his true parentage was further cemented when his children with wife Dr Elvianna Dorante-Day started showing similarities to the royals.
"After the birth of our daughter Chloe, that's when we really noticed the similarities. When she was 3 months old, her ears just popped out," he said.
"The curve of Chloe's ears and the tilt is exactly like Charles. And medically, they say that the ear is as good as a fingerprint, genetically, to show where you're from."
He claimed a stranger even once commented on his daughter's ears saying, "You'd think she was Prince Charles".
A composite image of Mr Dorante-Day next to photos of Prince Charles and Camilla. Photo / Supplied
Dorante-Day said he remembered being teased for having big ears as a child but claims he must have had surgery when he was young to get them pinned back as photos show they are "definitely different" now.
The royal family has never responded to Dorante-Day's claims but the 55-year-old is so confident that he is preparing to take the couple to court in order to demand a DNA test.
We have compiled a list of everything Dorante-Day has offered as proof of his royal lineage.
The many comparison photos
Over the years Mr Dorante-Day and his followers have created multiple comparison photos they believe show remarkable similarities between his family and the royals.
On one photo showing him alongside Prince Philip, Dorante-Day said his wife pointed out a similarity in their chins.
He said his during his childhood his grandmother repeatedly told him he was Prince Charles and Camilla's son.
"She didn't just hint at it, she told me outright," Dorante-Day previously said.
Dorante-Day was adopted by a local couple named Karen and David Day when he was 8 months old.
He previously claimed Camilla had kept him until that time but the adoption was arranged through his adoptive grandmother when he started to get too old.
The couple's murky timeline and Camilla's brief social scene absence
Dorante-Day has spent years researching the royals and the timeline of Prince Charles and Camilla's relationship, saying the dates for when they first met change depending on the source of the information.
He claims he was conceived in 1965 by a 17-year-old Charles and 18-year-old Camilla.
"One of the first things we did was get all the biographies that we could at the time and look this thing up and look at the times to see where Charles and Camilla were, who otherwise could be involved," he told Sunrise this week.
Prince Andrew alongside a younger Dorante-Day. Photo / Facebook
"I did do my research, so the timelines are gaps, people need to come forward and come clean."
He said the research led him to discover that in the months leading up to his birth Camilla disappeared from the UK social scene for at least nine months while Charles was sent to Australia.
Dorante-Day also revealed he has recollections of being taken to houses around Portsmouth as a young boy where he would spend time with a woman he believes was Camilla. He said protection officers and his adoptive parents would wait outside during these visits.
Dorante-Day told Sunrise his birth certificate is "complete rubbish" and said the documentation he has from his adoption is written in his adoptive mother's handwriting.
He said there is "lots of bits of evidence" like this that he needs to prove through avenues like handwriting analysis.
"I have a lot of evidence and I'm slowly collecting more. The longer this thing runs the more they are going to get it on their face, not me," he said.
He also claimed the hospital listed on his birth certificate didn't deliver a single baby during the decade he was born.
He also believes the names the parents listed on his birth certificate were "fictitious".
