Sarah Trimmer (née Kirby) (6 January 1741 – 15 December 1810) was a noted writer and critic of British children's literature in the 18th century. Her periodical, The Guardian of Education, helped to define the emerging genre by seriously reviewing children's literature for the first time; it also provided the first history of children's literature, establishing a canon of the early landmarks of the genre that scholars still use today. Trimmer's most popular children's book, Fabulous Histories, inspired numerous children's animal stories and remained in print for over a century. Trimmer was an active philanthropist as well as author; she founded several Sunday schools and charity schools in her parish. To further these educational projects, she not only wrote textbooks but she also penned manuals for other women interested in starting their own schools. Trimmer's efforts inspired other women, such as Hannah More, to establish Sunday school programs and to write for children and the poor. Trimmer was in many ways dedicated to maintaining the social and political status quo in her works. As a high church Anglican, she was intent on promoting the Established Church of Britain and on teaching young children and the poor the doctrines of Christianity. Her writings outlined the benefits of social hierarchies, arguing that each class should remain in its God-given position. Yet, while supporting many of the traditional political and social ideologies of her time, Trimmer questioned others, such as those surrounding gender and the family.