QUADROON (a corruption of quarteroon, Span, cuarleron, from cuarto, Lat. quartus, fourth), strictly a person having one fourth negro blood, the offspring of a mulatto and a white. The children of a mulatto and a negro are called in America zambos or sambos (possibly from Span, zambro, Lat. scambus, bowlegged), and the use of Sambo as a proper name for a black servant may have thus originated.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)