An Australian-based engineer who claims he is the love child of Prince Charles and Camilla Parker-Bowles will take his case to the High Court in a bid to prove the royals are his parents.
Simon Dorante-Day, 53, was born in Gosport, near Portsmouth, in April 1966, and was adopted when he was 18-months-old by British couple Karen and David Day.
Mr Dorante-Day, who now lives in Queensland, has spoken a number of times about his belief that he was put up for adoption by then 18-year-old Camilla Shand.
'My grandmother, who worked for the Queen, told me outright that I was Camilla and Charles' son many times,' he told New Idea.
Simon Dorante-Day, 53, was born in Gosport, near Portsmouth, in April 1966, and was adopted at 18 months old by British couple Karen and David Day
Mr Dorante-Day (pictured as a teenager), who now lives in Queensland, has spoken a number of times about his belief that he was put up for adoption by then 18-year-old Camilla Shand
The 53-year-old filed papers to the High Court just before Christmas, claiming his story is the 'most explosive' thing to happen to the palace.
'It's definitely the most significant step I've taken so far – I've had to force a deadline, hold them to a date, because we need answers,' he said.
The British national said Queensland court staff laughed at him when he initially filed the papers.
But they were eventually sent down to a High Court judge in Sydney to review and assess the case, he said.
Mr Dorante-Day said the palace would have learnt of his High Court submissions and the revelation would have caused 'panic' before Christmas.
In the wake of 'Megxit', Mr Dorante-Day is adamant his case would have come up during crisis talks at Sandringham Estate.
Mr Dorante-Day said the palace would have learnt of his High Court submissions and the revelation would have caused 'panic' before Christmas. Pictured: Prince Charles and Camilla in November 2019
'While the whole world was thinking they were talking about Harry, we believe this legal battle would've also been on the agenda and discussed,' he said.
Mr Dorante-Day's new case is requesting a mediation session and a 'Statement of Paternity'.
He claims Prince Charles, Camilla and the Queen have spent 'years' hiding from the truth.
The Queensland-based engineer has three other cases before the courts, which relate to his employment and belief he was unfairly dismissed.
Mr Dorante-Day, who is married to an Indigenous Australian woman named Elvianna, often posts updates on his bid to be recognised by the royal family to Facebook.
He penned an open letter to Prince Harry and Meghan where he drew similarities between his cross-cultural union with theirs.
He also shares side-by-side comparison photos of himself with members of the Royal Family, which he claims reveal a striking similarity.
Mr Dorante-Day claims Prince Charles, Camilla and the Queen have spent 'years' hiding from the truth. The Duchess of Cornwall is pictured in January 2019
The man who claims to be a royal love child: Who is Simon Dorante-Day?
Mr Dorante-Day is a 53-year-old British national who believes he's the love child of Prince Charles and the Duchess of Cornwall.
He claims his parents adopted him when he was 18 months old.
In an interview with Today Tonight, Mr Dorante-Day said his family had no other connection to the British Royal family. But says his grandmother met his grandfather while they worked as a cook and a gardener for the Royal family.
Why was he in court?
Mr Dorante-Day wants the court to help him return to work after he was suspended from his job with pay in June 2018 for allegedly threatening his boss while discussing leave balances.
In a written complaint, Mr Dorante-Day's supervisor alleges the radio-electrical engineer made him feel threatened when he said: 'that if I wanted to get into a driverless car heading for a cliff, then I would go over the cliff'.
Mr Dorante-Day is alleged to have also told his supervisor he was being watched by authorities investigating 'the royal issue'.
He unsuccessfully appealed the Public Service Commission's decision to suspend him from work at the Public Safety Business Agency.
He represented himself at the trial.
He argued, unsuccessfully, that the public service had acted unconstitutionally and he had not received natural justice because there was a lack of evidence and due process wasn't followed.
What does any of this have to do on his claim of Royalty?
Mr Dorante-Day told the court his 'royal issue' had caused problems with colleagues.
He said it was a contributing factor to him being suspended.
Interviews he had given to New Idea magazine about his royal beliefs were an issue, he said.
Will this decision by the Queensland Supreme Court on Tuesday end his legal battles?
No. Mr Dorante-Day previously told AAP he planned to file a case with the Federal Court over his claims of being a love child when he was back at work.
He said he faces another concurrent suspension from his job which he plans to fight at the Queensland Industrial Relations Commission.