The leading Frankish tribe was the Salians and their kings united all Franks during the latter half of the fifth century. These kings were called Merovingians because they descended from Merovech whom the Franks believed to be son of a divine creature. = Frankish Kingdom 482 = Conquests to 496 = Conquests to 507. The most famous Merovingian king was Clovis who ascended the throne about 482 AD.
Grand Marnier does not go bad if it unopened and stored correctly. It should be kept from direct sunlight. It should also be protected from extreme changes in temperature. (reference-ask.com) (more).
Unfortunately, Champagne does eventually go bad even if you have kept it unopened in the refrigerator (or in a cool and dry place), but it will take a number of years before that happens.on-Vintage Champagnes will expire a little more quickly after around 3-4 years after purchase and are aged for 2 to 3 years before that before they are available for sale.