An Australian man who believes he is the “secret son” of King Charles III has made a bold demand for a four-way paternity test to support his claims.

Simon Charles Dorante-Day, born in Britain, has garnered global attention for his unproven assertion that he is the hidden child of King Charles III and Queen Camilla.

Born on April 5, 1966, in Portsmouth, UK, Dorante-Day was adopted when he was just eight months old. The 58-year-old claims that, as a child, his adoptive grandmother—who worked for Queen Elizabeth II—revealed on her deathbed that he was actually Charles and Camilla’s son.

Dorante-Day asserts that before his birth, Charles went to Australia for studies, while Camilla disappeared from the public eye for about nine months. He has posted comparisons of his appearance alongside Charles, William, and Harry, suggesting inconsistencies in their likeness.

“The fact that my left side matches Charles while William and Harry’s don’t raises an important question: who are Charles’s real sons?” he said in a Facebook post featuring their side-by-side photos.

Dorante-Day and his wife, Dr. Elvianna, believe that a paternity test involving all four of them would resolve the matter. “After 58 years, the truth behind what the Monarchy, Government, and Establishment have concealed needs to come out,” he stated.

While Dorante-Day’s claims have sparked viral discussions online, Daily Mail Australia does not suggest there is any truth behind them.

Dorante-Day lives with his wife in Queensland, where he has given numerous interviews, often comparing his physical traits to members of the British royal family. He insists his children also bear a resemblance to Prince William and Kate’s children.

His claims center on the belief that Charles and Camilla began their relationship in 1965, a year before his birth, contradicting the widely accepted narrative that they met in 1970 at a polo match.