Sanditon, a British historical drama based on an unfinished novel by Jane Austen, is a salient reminder that the age of adulthood has varied over time.
In Sanditon, there are 2 'wards' or young women under the guardianship of older people. Clara Brereton (Lily Sacofsky) is declared by Lady Denham (Anne Reid) to be her ward in the opening episode. There is much more discussion about Sidney Parker (Theo James) being the legal guardian for 19-year-old Georgiana Lambe.
During the Regency Era, the period in which Sanditon is set, the 'age of majority' was 21. It reduced to 18 in 1970 in England.