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).
Your bottle of Midori and Malibu should be just fine to drink if theive been there for a year or so, no problem. Maybe just the midori can caramelize on the neck because of the sugar concentrations, but nothing bad is happening there.Only cream liquors as Baileys, etc. have caducity labels. Enjoy your drinks.Leo.owever, i know that an opened bottle for an extremelhy long time can go bad. But this would take over a decade. A year old bottle of rum is nothing to worry about.