Yeah but in the olden days they still used daemon though. Just a question, by the way: is their any particular reason why there are two different spellings of vampire? Because I know the Americans and English of the 18th and 17th century used the 'i' spelling, so I assume that's the traditional way.
I always understood this as, everyone has a Daemon. They are your guardian from greek mythology I believe but they exist on an astral level just like everything else xD And demons were just that...demons.