Interesting note: the term “nosferatu”, which is widely believed to be Romanian for vampire, comes into English through a book called “The Land Beyond the Forest”, which Bram Stoker used as a source for his research for “Dracula”.
The Romanian term for vampire is, however, vampir.
The word nosferatu does not exist before it appears in The Land Beyond the Forest.
The word nosferatu is, therefore, an English word. It is not found in any other language, except where, like English, it has arisen out of this odd little chain of provenance.
I have this idea that this could be a plot in setting, to craft faeries with the features we associate with the word.