Not Only Runaways Used the Underground Railroads
There’s a misconception that only runaway slaves used the Underground Railroad to escape the south. Although primarily the Underground Railroad assisted fugitive slaves, it was also used to protect free coloreds - those either never born into slavery, or emancipated slaves - when leaving the south. The biggest question is why would free-coloreds who almost always carried proof of their status, need protection when moving out of the south? The answer: slave traders would often catch free-coloreds migrating north and illegally sell them back into slavery; ignoring their right as a free-citizen. Therefore, the Underground Railroad was needed to protect free-coloreds too.
The Underground Railroad Records