Simon Dorante-Day is on the hunt for evidence that he is the son of Prince Charles and Duchess Camilla.
'I believe this has been a cover up,' he said in an interview with Today Tonight's David Richardson, which aired on Sunrise.
Simon Dorante-Day claims he's the birth son of Prince Charles and Duchess Camilla.
‘I know it sounds unbelievable, but anything I say is checkable... I’m simply a man looking for my biological parents, and every road has led me back to Camilla and Charles,' he told New Idea last week.
Simon believes that Camilla fell pregnant to Charles in 1965, but she kept her pregnancy a secret as she 'promptly disappeared from the social scene.'
Simon’s story starts on April 5, 1966, when he was born in Gosport, Portsmouth, in the UK. At 18 months old, he was adopted by local couple Karen and David Day.
His adoptive grandparents, Winifred and Ernest, both worked for the Queen and Prince Philip in one of their royal households, and hinted Simon was Charles and Camilla's son.
The Queensland local said his grandmother, Winifred, unveiled the explosive secret on her deathbed when she told Simon who his real parents were.
He explained: 'She said, ''We were always worried that we couldn't protect you that at some stage the truth would get out. That's as close as anybody would get to saying that [my parents] were Charles and Camilla.'
Do you spot the resemblance?
In his search for answers, Simon has written to many high-ranking officials in Australia and the UK, including Prince Charles himself, asking for DNA tests.
Prince Charles and Duchess Camilla. Photo: Getty Images.
Despite being largely ignored, Simon refuses to give up.
'The driving force for me is my parents... I want to meet my parents,' he says.
Click the image to subscribe to New Idea!
More from New Idea: