For 10 points, name this author of Moll Flanders who also wrote about Friday in Robinson Crusoe.
One of this author's characters sells his slave Xury to a Portuguese sailor. The title character of another of his novels learns that her husband in Virginia is actually her brother and then moves back to England, where she has an affair with a married man and then marries two other men. One of this author's characters keeps track of dates by making notches on a Cross and discovers that his island is inhabited by cannibals. For 10 points, name this author of Moll Flanders who also wrote about Friday in Robinson Crusoe.
One of this author's characters sells his slave Xury to a Portuguese sailor.
Daniel Defoe