Which preposition to use with quadroons

from Occurrences 1%

Finally, affecting slaves and colored freemen somewhat alike, and regardless as usual of any distinction of mulattoes or quadroons from the full-blood negroes, there were manifold restraints of a social character buttressing the predominance and the distinctive privileges of the Caucasian caste.

in Occurrences 1%

My mother had, when I was about six years old, taken a little octoroon girl of three, the illegitimate daughter of a quadroon in our neighborhood, with the intention of bringing her up as a servant.

into Occurrences 1%

For it now became for the moment the foremost necessity of his life to show, to that minute fraction of the earth's population which our terror misnames "the world," that a man may leap forth hatless and bleeding from the house of a New Orleans quadroon into the open street and yet be pure white within.

Which preposition to use with  quadroons