This information comes from Philip D. Curtin's book, The Atlantic Slave Trade, (1969), p. 221. Obviously, this is not the only version available, but Curtin is a heavyweight on the subject (along with W.E.B. DuBois, R.R. Kuczynski, E. Donnan, Davies, H.S. Klein, etc.) and I like the way the data is presented:
PROJECTED EXPORTS OF THAT PORTION OF THE FRENCH AND ENGLISH SLAVE TRADE HAVING IDENTIFIABLE REGION OF COAST ORIGIN IN AFRICA, 1711-1810.
Senegambia (Senegal-Gambia) * 5.8%
Sierra Leone 3.4%
Windward Coast (Ivory Coast) * 12.1%
Gold Coast (Ghana) * 14.4%
Bight of Benin (Nigeria) * 14.5
Bight of Biafra (Nigeria) * 25.1%
Central and Southeast Africa (Cameroon-N. Angola) * 24.7%
* The countries in parentheses
are rough approximations to help
you find the location on a modern map.
Now I will try to relate the above regions to selected ethnic groups. I've collected this data from a variety of sources, and I can't vouch for all of them. The central question for me is always, "Were these people called by that name during that time in that place?" I don't know how to show the nomadic and semi-nomadic groups, but I included several below anyway.
SENEGAMBIA: Wolof, Mandingo, Malinke, Bambara, Papel, Limba, Bola, Balante, Serer, Fula, Tucolor
SIERRA LEONE: Temne, Mende, Kisi, Goree, Kru.
WINDWARD COAST (including Liberia): Baoule, Vai, De, Gola (Gullah), Bassa, Grebo.
GOLD COAST: Ewe, Ga, Fante, Ashante, Twi, Brong
BIGHT OF BENIN & BIGHT OF BIAFRA combined: Yoruba, Nupe, Benin, Dahomean (Fon), Edo-Bini, Allada, Efik, Lbibio, Ljaw, Lbani, Lgbo (Calabar)
CENTRAL & SOUTHEAST AFRICA: BaKongo, MaLimbo, Ndungo, BaMbo, BaLimbe, BaDongo, Luba, Loanga, Ovimbundu, Cabinda, Pembe, Imbangala, Mbundu, BaNdulunda
Other possible groups that maybe should be included as a "Ancestral group" of African Americans:
Fulani, Tuareg, Dialonke, Massina, Dogon, Songhay, Jekri, Jukun, Domaa, Tallensi, Mossi, Nzima, Akwamu, Egba, Fang, and Ge.