Brown was lecturing in England when the 1850 Fugitive Slave Law was passed in the US; as its provisions increased the risk of capture and re-enslavement, he stayed overseas for several years. He traveled throughout Europe. After his freedom was purchased in 1854 by a British couple, he and his two daughters returned to the US, where he rejoined the abolitionist lecture circuit in the North. A contemporary of Frederick Douglass, Brown was overshadowed by the charismatic orator and the two feuded publicly.