Lincoln Blades, writing for Teen Vogue on Why You Can’t Ever Call an Enslaved Woman a “Mistress”:
Jefferson owned many slaves at Monticello, but Hemings has received the most attention because she is believed to have mothered at least six of his children. This fact led The Washington Post to use the word “mistress” in the title of its article (which has now been changed) and its tweet regarding the article.
You can read the rest here:
http://www.teenvogue.com/story/the-washington-post-thomas-jefferson-sally-hemings-slavery-mistress