Harriet Beecher Stowe

Harriet Elisabeth Beecher Stowe (/stoʊ/; June 14, 1811 – July 1, 1896) was an American abolitionist and author. She came from the Beecher family, a famous religious family, and is best known for her novel Uncle Tom's Cabin (1852), which depicts the harsh conditions for enslaved African Americans. The book reached millions as a novel and play, and became influential in the United States and Great Britain, energizing anti-slavery forces in the American North, while provoking widespread anger in the South. Stowe wrote 30 books, including novels, three travel memoirs, and collections of articles and letters. She was influential for both her writings and her public stances and debates on social issues of the day.

https://en.wikipedia.org/wiki/Harriet_Beecher_Stowe