Actually, I find no tragic elements in this poem. "The Eve of St. Agnes" is a beautifully achieved example of Romanticism in English literature. Rich in sensual figurative language, it tells the story of Prophyro and Madeline, young lovers who flee from her hateful family and run away together into the night. The poem ends with Prophyro and Madeline escaping together, surely a happy and satisfying ending. Romeo and Juliet they are not.