Upir - Male Vampire Name

This vampire was born of the thought-- much like the chiang-shih in China-- that a person had two souls, and a vampire was a corpse animated by one of the souls-- the lesser soul-- that remained in the body after death. This vampire had two hearts, and was known in the grave to have its eyes open, two curls in its hair and various other usual vampiric signs. Also known as nelapsi (Czech)

Information from:
The Natural History of the Vampire
The Vampire Book: The Encyclopedia of the Undead