Who is Jefferson Hope in relation to the Ferriers

Jefferson Hope is a young, strong, and capable hunter. He meets Lucy Ferrier, falls in love with her, and tries to help her and her father escape. Hope later hardens into a revenge-obsessed man who tracks Drebber and Stangerson, the two men responsible for the Ferrier's deaths, to London. He eventually murders both of them but dies peacefully and satisfied within a few days of his capture from an aortic aneurism.