An Australian who claims he is Prince Charles and Camilla’s secret lovechild says he has ‘proof’ he is their son. Grandad Simon Dorante-Day was conceived in 1965, when the Prince of Wales was just 17 and the Duchess of Cornwall, 18. The father-of-nine was born in the UK but was adopted by a family who he says had strong royal ties. He suggests his adoptive grandparents Winifred and Ernest both worked for the Queen and Prince Philip in the 60s. The 55-year-old made the bizarre claims after Charles and Camilla did not responded to his letters. He's even filed papers in a bid to force the royals to take a DNA test but he has still been ignored and says he won't stop there.