Brown rejects Cain origin for peoples of African ancestry.
William Wells Brown, The Rising Son (Boston: A.G. Brown, 1874), 46-47
Some writers have endeavored to account for this difference of color, by connecting it with the curse pronounced upon Cain. This theory, however, has no foundation; for if Cain were the progenitor of Noah, and if Cain's new peculiarities were perpetuated, then, as Noah was the father of the world's new population, the question would be, not how to account for any of the human family being black, but how can we account for any being white? All this speculation as to the change of Cain's color, as a theory for accounting for the variety peculiar to Cush and the Ethiopians, falls to the ground when we trace back the genealogy of Noah, and find that he descended not from Cain, but from Seth. Of course Cain's descendants, no matter what their color, became extinct at the flood. No miracle was needed in Ethiopia to bring about a change in the color of its inhabitants. The very fact that the nation derived its name from the climate should be enough to satisfy the most skeptical.