When Andrew Mountbatten-Windsor didn't get what he wanted, he chose violence, a royal biographer has claimed in a new book marking the late Queen Elizabeth II's birth centenary. According to author Robert Hardman, the former Duke of York once got into a heated confrontation with one of the monarch's top aides after being told a room he wanted to use to host an event at Buckingham Palace wasn't available. The argument then allegedly turned physical, leading both King Charles III and his late father, Prince Philip, to intervene in the aftermath.