Interesting, I do wonder why his great-grandfather made that move and why the binding; methinks the explanation will not rest well with a whole lot of folk (another propehcy, perhaps?). In any case, there seems to be quite a variety of manipulations going on here from all sides and 'twill be most interesting to see how Harry, with Xander's advice and support, makes his way through the mine fields and manages to link up with Fleur.