For Some Reason,

I had always thought that Bram Stoker's Dracula was based on a man,

but this might not be so according this article by Tom Chapman, image via Capcom | Anonymous Portrait, apparently Elizabeth Bathory is often referred to as The Blood Countess or Countess Dracula, and is said to have been the inspiration behind Bram Stoker's Dracula, GG Recon has more details:

Born into noble stock in 1560, Bathory ruled her family estate with an iron fist. While her husband was away at war, Bathory apparently took control of the estate. Although his name was Count Ferenc II Nádasdy, Bathory's higher social standing meant she kept her maiden name, and he even changed his to Bathory. These days, Elizabeth Bathory is often referred to as The Blood Countess or Countess Dracula, and is said to have been the inspiration behind Bram Stoker's Dracula,

 according to sources, Bathory tried to retain her youth by bathing in the blood of virgin women. The bowels of her home were reportedly found filled with dead or dying women (usaully between the age of 10 and 14), who Bathory and her conspirators would kidnap and torture. It's claimed that girls would attend the castle for etiquette lessons and were then subjected to horrors. Some say they were burned with hot tongs and then dunked in icy water, while others were apparently covered in honey and live ants. Accounts of Bathory bathing in blood come from after her death, so it's unclear whether they were factual or just added to folklore to make her more of a local boogeyman,

as it happens she has earned the honour of holding the Guinness World Record holder for "Most prolific female murderer" of all time. Even then, the exact number of people who fell victim to Bathory's wicked ways is unknown. The highest figure was recorded as 650 by her court official after he apparently read it in a private book. Unfortunately, no one has been able to corroborate this. Either way, Elizabeth Bathory's imprisonment came from accounts of over 300 victims and witnesses that could testify to her crimes, a lady Dracula? I never thought that could be the case, but there it is.