We know for sure that Napoleon III liked Courvoisier enough to designate it the “Official Supplier to the Imperial Court,” an association that Courvoisier still makes much out of with a Cognac that carries the Napoleon name.
Courvoisier even trademarks the association as “the Napoleon device and Le Cognac de Napoleon are registered trademarks of Courvoisier".
Once the cinematic adaptations took off, Cognac followed with a notable drinking scene in Goldfinger when the Sean Connery incarnation of Bond famously rattles off “I’d say it was a 30 year old finé indifferently blended Sir,……..with an overdose of Bon Bois.”
Later in Diamonds are Forever Bond, still played by Sean Connery at this stage, uses a bottle of Courvoisier to ignite an opponent. Much later in the series where buff Daniel Craig takes over, M as played by Judi Dench shares a glass of Courvoisier with Gareth Mallory played by Ralph Fiennes.
Cognac is a Brandy and Brandy comes from the Dutch word brandewijn which is a pretty succinct description of the traditional way of making brandy. You distill wine aka heating or burning it up in a still till the concentrated alcohol emerges…
Some people even credit prominent mentions of Cognac, especially Hennessy which is currently endorsed by NAS, by hip hop stars for launching its global prosperity.