In 1897, a book called "The Boy John" was published by a Kentucky lodge of the Order of Odd Fellows (a mutual benefit society with history going back to England), detailing the efforts of the lodge's members to track down and liberate the titular character, who was sold into slavery. After his liberation, the boy's whereabouts and identity is kept secret. Is the book based on real events, and if so - what was John's new identity?
If you want to read the book, you can find a copy here.
You can find the detailed summary of the book, along with all of my research here.