When Ursula Flint met Phineas Black, she thought of the Muggle story "The Thrush-Beaked King". He was as proud and beautiful as the princess in it, but he had the same chin as the hero.
This is a story set in HP but has little to do with the main text, because the protagonist is a character who happened more than a hundred years ago when the story of HP happened. However, the protagonist is not original and does not travel through time. Without them, there would be no subsequent characters such as Sirius, Bella, Nymphadora, Narcissa and so on. The heroine is not a good person... Well, she is actually a bad person.