Sophia "Sophie" Aubrey (née Williams) is Jack Aubrey's wife. She is described as exquisitely beautiful, charming, and of a kind nature. Her provincial and prudish upbringing ensures that she does not share his amorous tendencies, but they still have a happy marriage and three children: twin girls, Charlotte and Fanny, and a boy, George). Sophie proves to be very competent at keeping accounts, in addition to successfully managing a household whose main provider (Jack) is often absent for months at a time. Sophie has two sisters, Cecilia and Frances. Her mother's name is Mrs Williams and she is first cousin to Diana Villiers.