Byron Denniston is a character played by Andy Daly. He is a British royal watcher. He originally started following Kate Middleton when she was 15-years-old, as he had a feeling she was someone to watch. He claims not to be obsessed with her but he does think about her every waking hour. It wasn't until she married Prince William that Byron became a royal watcher.
In 233: Royal Watching he kidnaps the newborn royal baby, George, and re-names him Beetle Bailey.