Platinum Jubilee. But during one of the main events — the Trooping the Colour parade — one special, less-recognized person made an appearance alongside her: Prince Edward, the Duke of Kent.So, who is this lesser-known royal?The duke, 86, is the 96-year-old queen’s first cousin and he emerged on the Buckingham Palace balcony to receive the official salute to celebrate the monarch’s momentous 70-year reign.The duke took the place of the sovereign’s late husband, Prince Philip, the Duke of Edinburgh, who died last year at 99.