Lydia Maria Child (1802-1880) was a very influential antislavery author who came from an abolitionist family in Massachusetts. She married David Lee Child in 1828; both were avid antislavery activists. They contributed a sizeable portion of their modest income to the antislavery cause.
Child wrote several antislavery pamphlets while editing a New York City weekly, the National Anti-Slavery Standard, from 1841 to 1849. She is perhaps best known for An Appeal in Favor of That Class of Americans Called Africans, published in 1833, which included a history of slavery and demanded equality for blacks in education and employment; it was the first book-length work of its kind. Child also wrote historical novels, a history of religious sects, and books about Native Americans. She also founded a magazine for children.