You will be aware that in much of the early reports of the 18th century vampire panics that people reported visitations and invariably reported being strangled rather than being bitten. The assumption around the vampire drinking blood probably came from the discovery of “fresh blood” in the mouths, organs and coffins of suspected vampires. As such the vampire is like the mare, which gave its name to “nightmare”.
|Fuseli the Nightmare|
|Dallas Roberts as Charlie Crow|
|Jonathan Baron as Jeff|
|in the TV|
The imdb page is here.