We're all having a laugh at "DA VINKY?" and all, but most people fail to see what actually happened here. Reading "Da Vinci" most people default to Florentine Vulgar Latin (modern Italian) pronunciation "Da Vin-chi"; generally that would be correct as Leonardo Da Vinci was actually Florentine. However, if we consider that Italian is just based on a vulgar regional dialect of Latin, we can look at official Latin pronunciation which would sound more like "Da Win-ki", and given that the twins are allegedly of Hungarian descent we know that most Eastern Europeans interpret "W" as "V". What I'm getting at here is that the twins are not actually just stupid and think "Da Vinci" is pronounced "Da Vinky", I'm saying that the twins speak true Roman Latin and know that it's actually pronounced "Da Win-ki" and due to their Eastern European upbringing they pronounce it as "Da Vin-ki". These twins must have been around long enough to have heard Classical Latin, and thus must have been around since the age of the Western Roman Empire.
These twins aren't stupid, they're geniuses. They are immortal beings, who simply toy with humans by pretending to be fools for our amusement and their benefit. We shouldn't mock them, we should fear them.