Escaped slave who became an abolitionist and Union spy during the Civil War and rescued over 300 slaves using the Underground Railroad, a network of secret routes and safe houses that aided runaway slaves. She also fought for women's suffrage after the end of the Civil War.
She worked as a slave for James Cook, checking muskrat traps in the marshes.
She helped John Brown recruit men for his raid on Harpers Ferry in 1859.
She married a free man named John Tubman in 1844, and they adopted a daughter named Gertie in 1874.