Dorante-Day, 53, is taking the legal action hoping to prove that he is the illegitimate son of Prince Charles and Camilla Parker-Bowles from before Charles married Diana. 3 Prince Harry is Prince Charles’ son and not James Hewitt’s. Dorante-Day has shared this photo compile to show the likeness of his younger self to the Duchess of Cornwall. "I totally see it and I totally understand it because of all these years of conversations that we've been having. A Queensland man who claims to be the secret son of Prince Charles and Camilla, Duchess of Cornwall, has released his correspondence with the royal couple for the first time.Simon Dorante-Day has fought for decades to prove his claims that Charles and Camilla are his biological parents, even taking his battle to the Australian High Court.The 54-year-old grandfather believes he was conceived when Charles and Camilla were first linked to one another in 1965 and born in April 1966.He was later adopted to a family in Portsmouth, England, who had ties to the Queen.“My grandmother, who had worked for the Queen, told me outright that I was Camilla and Charles’ son many times,” he told Prince Charles and Camilla have never responded to Dorante-Day’s claims.Now Dorante-Day has released his initial letter to Charles and Camilla from 2012, where he raised his paternity claims for the first time.“The letter below is the one I wrote to the Prince of Wales and the Duchess of Cornwall in 2012,” he said.“I had a family lawyer review the letter - he made no changes.“It was hand delivered by Detective Inspector David Smith of SO14 to Prince Charles Private Secretary, for which I have a receipt, and time of delivery.”In the letter, Dorante-Day directly tells Charles and Camilla he believes they’re his parents.“I have been in search of the identity of my natural parents for as long as I can remember but in earnest researching and investigating for the last 15 years,” he wrote.“This combination of historical research, remembered events and statements, investigation and approaching Government resources continually points in one direction; that of yourselves.”Dorante-Day then went on to outline concerns that his Australian wife, Dr Elvianna Dorante-Day, and children were being targeted over their claims.“Subsequently, because of these types of incidents, I have also enlisted the assistance of a legal firm who are willing to represent me in this endeavour should this letter prove to be ineffectual,” he wrote at the end.“Furthermore, I am also aware that as I was adopted there is a legislative obligation for me to give my consent to my natural parents for them to contact me. He was baptised in the palace's Music Room by the Archbishop of Canterbury, Geoffrey Fisher, on 15 December 1948. "Prince Harry joked: "That I'm listening?" A Queensland man who claims to be the secret son of Prince Charles and Camilla, Duchess of Cornwall, has released his correspondence with the royal couple for the first time. Given this opportunity in an informed manner, I would gladly give my consent.”While Dorante-Day didn’t receive a response from Charles and Camilla, he has not given up his quest for answers.“I know that my story sounds unbelievable, but everything I say is checkable - if you don’t believe it, check it,” he said.“I’m simply a man looking for my biological parents, and every road has led me back Camilla and Charles.“I’m not in this for money or for a title - I simply want to know who my parents are.”Simon Dorante-Day has provided these claims to support his belief that he is Charles and Camilla’s son.Prince Charles and Camilla have never responded to Simon Dorante-Day's claims. newspaper archive.Prince Charles's emotional admission to son Prince Harry - 'It makes me very proud' Prince Charles and Harry: The royal father and son relationship is somewhat formal Meghan Markle and Harry's son Archie to be hit by royal restrictionPrince Charles and Harry: Charles is in charge of funding both his son's lifestyles 'Money source of tension' between Prince Charles & HarryRoyal rip off: Honey from Prince Charles's bees costs £25 a jarPrince Harry's 'woke journey' will 'avoid politics' unlike MeghanZara Tindall and Mike's daughter Mia to undergo massive changeSophie Wessex and Edward prepare Lady Louise for important step upPrince Charles and Harry: Charles raised William and Harry to be eco-conscious