Dorothea Brooke is a 19-year-old orphan, living with her younger sister, Celia, under the guardianship of her uncle, Mr Brooke. Dorothea is an especially pious young woman, whose hobby involves the renovation of buildings belonging to the tenant farmers, though her uncle discourages her. Dorothea is courted by Sir James Chettam, a young man close to her own age, but she remains oblivious to him. She is instead attracted to The Reverend Edward Casaubon, who is 45, and Dorothea accepts his offer of marriage, despite her sister's misgivings. Chettam is meanwhile encouraged to turn his attention to Celia, who has developed an interest in him