Before he was captured while leading his father’s army home from battle, 26-year-old Abdul-Rahman Ibrahim ibn Sori was a married Muslim prince in Africa. Within a year, he was sold into slavery in America. Even when recognized by an American doctor who had known Sori in Africa, his owner, Thomas Foster, refused to free Sori. President John Quincy Adams would later help to free Sori, 40 years after he was enslaved. However, Sori was unable to secure the release of all his enslaved children, and he died of a fever before he could return to his native village.