Kunta Kinte (also known as Toby Waller) ( c. 1750 - c. 1822) is a character in the novel Roots:

The saga of an American family by American author, Alex Haley.

Haley claimed that Kunta Kinte was possibbly based on one of his ancestors:

A Gambian man, who was born 1750. Enslaved & taken to America. Who died in 1822. .

More Info: en.wikipedia.org