In the hebrew mythology there's Lilith,i'm sure u have heard about her. First wife of Adam,refuses to submit to him(during sexual intercourse she wanted 2 be on top). She rebels, God sends an angel 2 convince her to be the "wife" to obey Adam,after this she pronounces God's holy names and then she flees in the desert, cursed, becoming the demon Lilith,mother of all demons including vamps. Some other legends state that vampires are the descendants of Cain. Cain killed Abel,commiting the 1st murder and becoming the father of vampires. There's are many legends but Lilith is the main source. Her symbol is an owl and even in our times,believers say that she comes in the night to steal and kill unbaptised babies. It is also related 2 the eastern'european superstition that babies/people who die unbaptised turn into 'strigoi" /vampires. I can't tell u more,i'm on my phòne but u can search the internet.