Drac a fact?

It has been discussed many times in diffrent places. Yet, there has only been 1 piece of evidence that Dracula MAY exist. Back in the 15th or 16th century.Vlad The Impaler was sometimes known as Dracula's he son when he was a roman price or something and he did something a vampire would do. I forgot the details but, it doesnt proove Dracula fully. Post your opions here.