Reply to post #15
It's in Ovid's Metamorphoses
, which I revisited for the Halloween Bingo -- the Wiki article that Lora cited gives "wolf person" as the translation of the Greek λυκάνθρωπος (lukánthrōpos), and "Lycaon" actually doesn't sound so far removed from that, especially if you think of the interchangeability of "u" and "y".
I saw the connection of the Lycaon story to werewolves, just not to vampires. Sounds like (even linguistically) there is a tentative joint root of werewolf and vampire lore in Greece and parts of Eastern Europe, though, in that both were known as "revenants" and (e.g.) collectively called "vulkodlak" in Serbia, which in turn doesn't sound so totally different from the Greek word for "vampire", "vrykolakas".
Obviously the classification as revenants also means there's a common root with zombie lore. Which makes sense, come to think of it ...
Wiki on Vampires: https://en.wikipedia.org/wiki/Vampire
Wiki on Revenants: https://en.wikipedia.org/wiki/Revenant