A 58 year old man from Australia claims to be the child of King Charles and Queen Camilla - and we've totted up all of his 'evidence'.
The man in question, Simon Charles Dorante-Day, has gone to great lengths to establish the supposed link to online naysayers.
Living more than 9,000 miles away from the royal palace in Australia, however, it seems pretty far-fetched.
But according to Simon, it all comes down to his birthday, and his birthplace.
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He was born in England in 1966, and was then put up for adoption. His adoptive parents then moved the family over to sunny Australia.
Simon has previously shared to The Daily Mail that his adoptive grandmother - who was reportedly an ex-employee of the late Queen Elizabeth and Prince Philip - had allegedly chosen to reveal to him before she died that he was closely related to then Prince Charles and Camilla.
Simon has a Facebook account where he stresses that he and his extended family share an alleged resemblance with the Royal Family.
Simon chose to share a photo of his granddaughter, whom he believes has an uncanny resemblance to Princess Charlotte, the daughter of Prince William and Kate Middleton.
He said: "I know many of you often share comments on the likeness between Meriam and Charlotte. I received this image today from one of the fans in the page."
In the picture, his granddaughter can be seen with similarly long-brown hair as Princess Charlotte and appears to be posing in a similar fashion.
When Simon was born, King Charles would have been around 17 years old and Camilla would have been 18.
Official records state that the King and Queen didn't meet until at least five years later in the early seventies.
Before marrying each other in 2005, they both embarked on separate marriages, with Camilla marrying Andrew Parker-Bowles, while Charles married Princess Diana.
Though it is now public knowledge that Camilla and Charles had an affair during their marriages - but no children were welcomed.
According to 7 News, Simon's grandmother allegedly 'didn't hint' at Camilla and Charles being his parents - instead she told him 'outright'.
They also report that he believes 'he has recollections of being taken to houses around Portsmouth as a little boy', where he would 'spend time with the woman he believes was Camilla, while protection officers and his adoptive parents waited outside'.
Tyla has contacted Buckingham Palace for comment.
Topics: Royal Family, King Charles III, Australia
Kya Buller