During the struggles for the French crown in the tenth century, Hugh the Great brought Charles the Simple's son Louis IV back from exile in England and set him on the thrown, but Hugh was the real ruler of France until his death. Hugh was the brother-in-law of Raoul II, King of France from 923 till 929. (Williamson, David. Debrett's kings and queens of Europe. Topsfield, Mass. : Salem House Publishers, c1988, pg. 67-68).