Found a site which can generate your vampire name (and also your fairy name if you so want). For me the results were:
the Great Archives determine you to have gone by the identity:
Emperor of The Underworld
Known in some parts of the world as:
Samurai of The Steely Moon
The Great Archives Record:
A child of the Moon Goddess – Cold, determined, but of the light in the night.
Not bothered so much about being Emperor of the Underworld, but you have to admit Samurai of the Steely Moon is a pretty goddam cool monniker, especially for someone who used to fence a lot. I like it!