You can name a vampire anything you'd like, but these names sound a little more vampire-ish in my opinion.
(girls)
siren
victoria
katya
saffire
lilah
serina
rosalie
estrella
nisha
claudia
vanessa
violet
ruby
valerie
natalia
demetria
minerva
nirvana
vasilia
scarlet
bianca
nadine
nadia
naida
xena
meredith
esmerelda
esme
anastasia
willow
valentina
zada
salem
(boys)
salem
craton
criton
nico
nicolai
viscardi
lancelot
demetrius
simon
christian
victor
vincent
zane
theodore
cain
tobias
marcel
marcellus
anthony
isaac
dustin
lazarus
sebastian
sirius