Lady Susan
Lady Susan Vernon is a beautiful and charming(someone who can please and attract someone else)recent widow. She visits her brother-in-law and sister-in-law,Charles and Catherine Vernon, with little prior notice at Churchill, their house. Catherine is not happy, as Lady Susan, a long time ago, had tried to prevent her marriage to Charles.  Catherine's unwanted guest has also been described to her as "the most accomplished(very skilled in something) coquette(a flirtatious woman) in England".