Harriet Tubman (born Araminta Ross; c. 1822 – March 10, 1913) was an African-American abolitionist, humanitarian, and Union spy during the American Civil War. After escaping from slavery, into which she was born, she made thirteen missions to rescue over seventy slaves using the network of antislavery activists and safe houses known as the Underground Railroad. She later helped John Brown recruit men for his raid on Harpers Ferry, and in the post-war era struggled for women's suffrage.
Peter Griffin tries to pass off Cherrywood Manor as the site of the Underground Railroad in "Peter, Peter, Caviar Eater", revealing a toy train under the floor.
Lois mentions Peter frivolously spending money on a wax sculpture depicting Gwyneth Paltrow having sex with Tubman in "Patriot Games".
While cyber-bullying Lois in "Connie's Celica", Connie D'Amico sets her up as the admin of a Facebook group to keep Harriet Tubman off the $20 bill.