I don't know who the author of 'the last vampire on earth novel' is. You could try searching for it in a library database or on a book - selling website.
Bram Stoker is the well - known author of 'Dracula', a very important early vampire novel. Stoker's research into different cultures and superstitions, along with his vivid imagination, led to the creation of the complex and terrifying Count Dracula, who has since become an archetype for vampires in modern media.
It's difficult to say exactly who created the first real vampire story as vampire - like concepts have been part of different cultures for a long time. However, as mentioned before, the ancient Greeks had the story of Lamia which was one of the early vampire - like stories. So in a sense, the anonymous storytellers of Greek mythology could be considered as some of the first 'creators' of such stories.