John Keats
The movie is based on biographical events from John Keats's life. John is shown as a quiet and reserved character who is reluctant to respond to Fanny's flirtation. A struggling poet, grieving for his brother he sees it unsuitable to ask for her hand.
Fanny Brawne
Fanny is portrayed as a passionate and flirtatious lady with a love for fashion. She is the opposite of John, open and extroverted. She is the inspiration behind the famous love poetry of Keats.
Charles Brown
Charles Brown is Keats's friend and partner in writing. Keats and Fanny meet through his mutual acquaintance, and he jokingly writes love letters to Fanny creating a drift between the two.
Fanny's mother
Fanny's mother is a character in the movie that warns her about Keats and reveals to her why he is reluctant to respond to the love advances, which is because he has no money. Fanny's mother finally gives them her blessing after Keats gains some financial stability.