Alnwick Castle, located in the county of Northumberland, is over a thousand years old. It has undoubtedly seen a lot, and it is home to one of the more bizarre alleged vampire hauntings. The tale was chronicled by William of Newburgh, who was not averse to spicing up his accounts, so there is some doubt as to whether there actually were any credible eyewitnesses. According to the legend, there was a 12th century servant under the charge of the Lord of Alnwick Castle who had a rather unsavoury reputation.
Fearing that his wife was being unfaithful, he decided to climb onto the roof to spy on her. To his chagrin, he was proven right. She was in fact cheating on him. The anger caused him to fall and he cursed his wife before dying without repenting his sins. Many villagers claimed to have seen him in the days following his burial and a number of deaths were attributed to his rotting corpse spreading the plague. Eventually the people had enough. Following a local priest, they marched to his grave on Plam Sunday, opened his coffin, and stabbed his corpse with a shovel. Supposedly warm blood ran from the cadaver and this was seen as proof that the man was indeed a vampire. His body was burned and he was never seen again.