Bram Stoker died April 20, 1912, in London, England

I will not let you go into the unknown alone.
Bram Stoker

Bram Stoker 1847-1912 – Author of “Dracula”
From Death Centenary of Bram Stoker
Ireland issued the set April 19, 2012

According to biographer Liam Dail (Bram Stoker: The True Story of the Life & Time of the Great Author), Stoker spent 7 years researching and writing Dracula. During this time, he tapped into a wealth of homegrown folklore about bloodsucking entities to flesh out the Count from Transylvania. As early as 1819 vampires were subjects of story telling in English literature. John William Polidori, a friend of Lord Byron and Percy Shelly, wrote The Vampyre at the same time Mary Shelly penned Frankenstein. It was published in The New Monthly Magazine and Universal Register; London: H. Colburn, 1814–1820. Vol. 1, No. 63. Stoker would have been familiar with the story, given his relationship to the world of literature and theatre. He connected Drăculești with the undead legends and created the modern vampire genre. 
From A tale of two Draculas – Romania & Ireland take on the myth | Bitter Grounds Magazine

You can read more about both the Dracula legend and Bram Stoker at the link above.