Red XIII's real name is Nanaki.

Red XIII

Red XIII's final Limit Break, Cosmo Memory, is inside the ShinRa mansion in Nibelheim, inside a safe.

No. Ouch

Not all decanters of the Louis XIII by Rémy Martin come in a red box, e.g. between 1951-1958 they came in a green velvet box, between 1962-1963 they came in cream colored boxes. The first Louis XIII in a red box were made between 1959-1961, just have a look http://blog.cognac-expert.com/remy-martin-louis-xiii-sale