[HexGirlBestGirl]

When people became aware of the prevalence of Vampires, they began to carry Holy weaponry. Which incidentally also works on Dullahans.

I'm sure this is a typo and all but I really want to point out that i'm 99.99% sure this is not the case as for that's what the entire main suggestion of this thread was. Just in case any thoughts were founded with this in mind.