Georgiana, Duchess of Devonshire (Keira Knightley), was an 18th century scandal magnet for having both a swine and a swain — an icy, cheating husband (Ralph Fiennes) and a Whig politician lover (Dominic Cooper). This middling drama is less a history lesson than a tour of sumptuous real estate. The loveliest acreage is Knightley's alabaster back.
Grade: C+