Alright people check out this shizzagee...
In QG1, Brauggi is a play on Bragi, on of the Gods in the Aesir, the pantheon of Gods in Norse Myths, who guarded Bifrost, the rainbow bridge into Asgard, the home of the Aesir. And earlier, someone said something about the World Tree being the center of the world in Norse mythology. Actually the world was created from the body of the giant Ymir after he was killed (forget by who)
About vampires, they didn't "orginate" anywhere (least I dont think they did). They have been around in just about every culture. The Upir, Russian vampire, differed greatly from the Chiang-Sih, the Chinese vampire, or the Asema, or South American vamp (well at least in some part of South America).
All vampires are different in each religion, and each area, they are spoken of. The Asema of South America was an old man or woman who changed at night. Their skin peeled off and they turned into a ball of incandescant light that sucked victem's blood. The Strigoi, the Roman vampire, im not too sure about...but I know that they were called Strigoi

. Kali was a God in India who was, guess what, a vampire.
There were also many different ways to kill or stop a vampire. Obviously the stakeof oak, garlic, fire, sunlight, holy water, and decapitation are well remembered. Different countries have different ways of stopping vampires. Some places have priests give the last rites and such at burial, so that the soul is taken away from the body. Another is to fire a bullet into the coffin of the dead person. more of the less known is using the same type of thorn that made up Jesus's thorn crown thing when he was crucified, and using it as a shield against the vampire. another was to scatter seeds over the grave of the vampire, so it had to count them very slowly. Another is the Crucifix and the wafer, which kept the vampire at bay (so did different symbols in other countries, but thats not important).
as you guys might have guessed...i love vampires...and Norse mythology too.
EDIT- it was Heimdall that guarded Bifrost, not Bragi