who do you think studied vamparism the most.

dutchess elizebeth
wanted to stay young forever. hit her maid one day and blood landed on her hand. she loved the blood and thought it made her look beautiful. she slaughtered all her maids and bathed in their blood. when she died it is said her body was never found.
bram stroker (i think thats how you say his name)
he wrote dracula. ( don't forget he's the one who described vampires in it)