Kingsley's main business in Spanish Florida was providing a ready supply of well-trained slaves, who were smuggled by or to planters of Georgia and South Carolina. This, plus his "interracial" family, resulted in Kingsley's being deeply invested in the Spanish system of slavery and society. As in the French colonies, certain rights were provided to a class of free people of color, and children of female slaves were allowed to inherit property from their white fathers. "In the Spanish Floridas free people of color...enjoyed tremendously elevated status when compared to virtually any other person of African descent in North America."
