European Divorce and Inheritance Laws?

Tim Worstall has found a bit of news in the Telegraph on the EU's plans to harmonise the inheritance laws. What exactly does this have to do with a free trade area? Nothing, as usual. His analysis is that this harmonisation will probably lead to the errosion of the rights to give your money to whomever you want currently operated in this country and towards a more continental style where you have to give it equally to all of the children.