WMG / Vanity Fair

• Monsieur Thenardier is Becky's cousin. She is mentioned as being amused at the caliber of her maternal relatives she meets in Paris. He was around at the Battle of Waterloo, which occurs in the first half of the novel, making the timeline add up, and shares many of her characteristics, ruthless, recourseful, money hungry, dishonest, pretentious (perhaps.)