Sarah "Sally" Hemings was a female slave with one-quarter African ancestry owned by president of the United States Thomas Jefferson, one of many he inherited from his father-in-law, John Wayles.

In the colonial societies of the Americas and Australia, a quadroon or quarteron was a person with one-quarter African/Aboriginal and three-quarters European ancestry. Similar classifications were octoroon for one-eighth black and quintroon for one-sixteenth black.