Poor Princess Margaret (Helena Bonham Carter) has a rough time of it in the new season of The Crown, in particular in the seventh episode, "The Hereditary Principle." In the space of that single episode, Margaret has a medical scare that requires lung surgery, is demoted from her royal duties, and discovers a devastating secret about her family. But before any of that, she endures a major romantic disappointment in her relationship with Derek "Dazzle" Jennings (Tom Burke), a young priest she's developed feelings for. For reasons that soon become clear, she's barking up the wrong tree. Here's the true story of Dazzle and his relationship with the princess.