Prince Charles and Camilla Parker-Bowles are two of the most controversial members of the British royal family. Camilla rocked the royal household when she had a secret affair with the Prince of Wales, ruining his marriage to the late Princess Diana. Many years after they tied the knot, a man emerged to claim that he was Prince Charles and Camilla’s love child, causing the royal couple and their followers to scratch their heads.

Earlier this year, a man named Simon Dorante-Day came forward to tell the world that he is Prince Charles and Camilla’s son and that he was conceived during the days of their salacious affair — while Prince Charles was still married to Princess Diana. According to his story, he was adopted when he was 18 and his late adoptive grandmother, a former servant of Queen Elizabeth, was the one who had allegedly told him that his parents were Prince Charles and Camilla. He said his grandmother had told him he had to be put up for adoption before anyone could find out he existed.

“I was very close to my grandmother and she told me many times that I was Camilla and Charles’ child,” he said. “She didn’t just hint at it, she told me outright,” he added. Dorante-Day was very confident with his claim and even said that he wanted a DNA test to prove that royal blood runs through his veins.

He also claimed that Princess Diana knew about him. “We believe Diana knew of my existence and that she had put the pieces together,” he said. “At the time, there were all sorts of rumors flying around about the royal family, and my existence was one of them. 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,” he continued.

However, he made it too easy for people to not believe his claim because of a hole in his story. He said he was born in 1966 — making his timeline for Prince Charles and Camilla being his biological parents off. This is because Prince Charles did not meet Camilla until the early 1970s. Also, Princess Diana was only seven years old in 1966 and was therefore not yet married to Prince Charles.

Prince Charles and Camilla Clarence House official handout photo of the Prince of Wales and his new bride Camilla, Duchess of Cornwall, in the White Drawing Room at Windsor Castle after their wedding ceremony, April 9, 2005, in Windsor, England. Hugo Burnand/Pool/Getty Images