i can add a bit to Count Dracula:
His father's last name was Dracule, back then adding an a to the last name meant "son of", therefore the name Dracula, yes, that was his name.
It is believed, and well supported (dont ask me for details, i dont remember them from my human geography class), that he was very sensitive to sunlight, to the point where daylight would cause blisters very rapidly. This led to the myth of vampires melting in the light.
Also from the same source as above: it is believed that he found that drinking blood to be somewhat easing of this disorder
He enjoyed impalings, he would have people impaled in front of him at his dinner table. The lining of POWs on sticks was when he was in retreat after a major defeat. He retreated back to his borders and lined them with impalements to disturb the invading army in order to get them to turn back, which worked.
He couldnt stand the thought of poor and sick living in his country, so he gathered them all up, built a bigass dining lounge out of wood, brought in the poor and sick, brought in a big feast, sat at the head of the table, excused himself while the rest were still eating, and had the doors locked. He then set fire to it, and thus got rid of the sick and poor in his country.