This is bizarre.

An Australian man claims he is the secret lovechild of Prince Charles and Camilla.

He now says he has “proof” that he is their son – a photo of one of his children, compared to one of the Queen.

Simon Dorante-Day was born in the UK in 1965. Prince Charles was just 17 at the time, and the Camilla, 18.

He was adopted by a family who he says had strong ties to the royal family.

The 55-year-old grandad insists his adoptive grandparents, Winifred and Ernest worked for the Queen in the 60s.

He is surprised that Charles and Camilla have ignored his letters so far.

Grandmother

Simon says his Grandmother is the one who gave him the idea that he is related to Prince Charles.

He today told 7 News : “My grandmother, who had worked for the Queen, told me outright that I was Camilla and Charles’ son many times.

“We owe it to our children for them to have answers.

“We have some exciting new legal paths that we’re looking at to uncover the truth.

“At the end of the day, I’m just a man who’s looking for his biological parents – and every road takes me to Charles and Camilla.”

Legal Action

After no reply to his letters, he’s even taking it to court.

He is attempting to force the royals to take a DNA test but says he won’t stop there.

Simon lives in Queensland, Australia. He insists he has proof of their connection.

He has put two pictures side-by-side, comparing his son Liam to the Queen when she was young.

Mr Dorante-Day claims he was “blown away” when he saw the pictures and insists the pictures are evidence.

He truly believes that he is the son of Charles and Camilla,  and that he was adopted because they had him when they were teenagers.

The Grandad has been to the Australia’s High Court to fight his case.

So far, three previous legal attempts to prove his claims have failed, according to The Daily Mail.

He also said: “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”.

Princess Diana

The Australian believes Princess Diana knew the “truth.”

“We believe that Diana knew of my existence and that she had put the pieces together,” he said.

“I think Diana was at a point where she was finding out answers about her life, how she was wronged, and she was going to go public with it.”

However, he was born 1966, several years before Charles and Camilla are believed to have first met at a polo match in 1970.

Charles and Camilla married in 2005.

Disbelief

He refers to himself as “Prince Simon” on social media and regularly posts side-by-side photos.

Meanwhile, critics pointed out that his eyes are brown but Charles and Camilla both have blue eyes.

One commenter said: ‘Two people who have blue eyes cannot produce a brown eyed person. How is that explained in your case Simon?’

But Simon replied: ‘That’s been explained publicly Sue it’s already out there – that’s why they had to tamper with my eyes – exactly the point’.

So what do you think?

Image via Facebook/Simon Charles Dorante-Day