From Wikipedia
Abdu-l-Rahman Ibrahim Ibn Sori (a.k.a. Abdul-Rahman) was a prince from West Africa who was made a slave in the United States. In 1828, he was freed after spending 40 years in slavery by the order of President John Quincy Adams and Secretary of State Henry Clay after the Sultan of Morocco requested his release.
He was born in 1762 in Timbo, West Africa, (in present day Guinea, Fouta Djallon). He was known as the "Prince of Slaves" or "Prince." He was a Fulbe or Fulani, (Fula) of the land of Fouta Djallon. Ibrahim left Futa in 1774 to study in Mali
at Timbuktu. Ibrahim was leader of one of his father's army divisions.
After winning a battle against a warring nation, he took with him a few
soldiers to report back to his father, when he was ambushed, captured,
and sold to slave traders in 1788 at the age of 26. He was bought by a Natchez, Mississippi cotton plantation owner, and eventually became the overseer
of the plantation of Thomas Foster. In 1794 he married Isabella,
another slave of Foster’s, and eventually fathered a large family: five
sons and four daughters.
By using his knowledge of growing cotton in Fouta Djallon, Abd
al-Rahman Ibrahim rose to a position of authority on the plantation and
became the de facto
foreman. This granted him the opportunity to grow his own vegetable
garden and sell at the local market. During this time, he met an old
acquaintance, Dr. John Cox. Dr. Cox was an Irish surgeon who had served
on an English ship. He was the first white man to reach Timbo after
being stranded by his ship and falling ill. Cox stayed ashore for six
months and was taken in by the Abd al-Rahman Ibrahima family. Cox
appealed to Foster to sell him "Prince" so he could return to Africa.
However, Foster would not budge, since he viewed Abd al-Rahman Ibrahim
as indispensable to the Foster farm (among other reasons). Dr. Cox
continued, until his death in 1816, to seek Ibrahim's freedom, to no
avail. After Cox died, Ibrahim continued the cause.
In 1826, Abd al-Rahman Ibrahim wrote a letter to his relatives in Africa. A local newspaperman, Andrew Marschalk, who was originally from New York, sent a copy to Senator Thomas Reed in Washington, who forwarded it to the U.S. Consulate in Morocco. Since Abdal-Rhaman Ibrahim wrote in Arabic, Marschalk and the U.S. government assumed that he was a Moor. After the Sultan of Morocco Abderrahmane
read the letter, he asked President Adams and Secretary of State Henry
Clay to release Abd al-Rahman Ibrahim. In 1828, Thomas Foster agreed to
the release of Ibrahim, without payment, with the stipulation that
Ibrahim return to Africa and not live as a free man in America.
Before leaving the U.S., Ibrahim and his wife went to various states
and Washington, D.C. He solicited donations, through the press,
personal appearances, the American Colonization Society
and politicians, to free his family back in Mississippi. Word got back
to Foster, who considered this a breach of the agreement.
Abdul-Rahman's actions and freedom were also used against President
John Quincy Adams by future president Andrew Jackson during the presidential election.
After ten months, Abd al-Rahman Ibrahim and Isabella had raised only
half the funds to free their children. They made arrangements to leave
America. He went to Monrovia, Liberia
with his wife. Abd al-Rahman Ibrahim lived for four months before he
contracted a fever and died at the age of 67. He never saw Fouta
Djallon or his children again.

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