The Tenant of Wildfell Hall by Anne Bronte

A mysterious young widow arrives at Wildfell Hall, an Elizabethan mansion which has been empty for many years, with her young son and servant. She lives there in strict seclusion under the assumed name Helen Graham and very soon finds herself the victim of local slander. Refusing to believe anything scandalous about her, Gilbert Markham, a young farmer, discovers her dark secrets.