quarteroon

The child of a white man by a mulatto woman was called a quarteroon, -- the second degree; from a white father and a quarteroon mother was born the male tierceroon, -- the third degree; the union of a white man with a female tierceroon produced the metif, -- the fourth degree of color.

Toussaint L'Ouverture: A Biography and Autobiography 1863

I never understood why there were quadroon and octroon categories but no three-quarteroon category.

The Volokh Conspiracy » Popular Sovereignty: 2009

A quarteroon pet of Ormond, -- just spinning into fashionable and luscious insensibility, -- fell from my arms into those of her master; and while I apologized for the freak, I charged it altogether to the witchcraft of his wit and wine.

Captain Canot or, Twenty Years of an African Slaver Theodore Canot

It was a bright, star-light night; and, as I opened the door sufficiently to obtain a glance beyond, -- still maintaining my control of the aperture, -- I perceived the figure of a female, wrapped in cotton cloth from head to foot, except the face, which I recollected as that of the beautiful _quarteroon_ I was whirling in the waltz, when surprised by the Mongo.

Captain Canot or, Twenty Years of an African Slaver Theodore Canot

The manner of these _quarteroon_ girls, whose complexion hardly separates them from our own race, is most winningly graceful; and

Captain Canot or, Twenty Years of an African Slaver Theodore Canot

I was not detected till I reached nearly the centre of the sanctuary where Ormond confined his motley group of black, mulatto, and quarteroon wives.

Captain Canot or, Twenty Years of an African Slaver Theodore Canot

_quarteroon_ visited my hovel, I had contrived to meet this charming girl, as the only solace of my solitude.

Captain Canot or, Twenty Years of an African Slaver Theodore Canot