Ernest Valdemar is a fictional character. He is the central character (but not the protagonist) in Edgar Allan Poe’s short story and journalistic hoax “The Facts in the Case of M. Valdemar.” I have used the Valdemar character as an avatar/pseudonym on the Internet for over ten years.
NOTE: The banner image is a cropped version of the amazing Harry Clarke’s Arts and Crafts/Expressionist illustration of Poe’s original story. It is often mistakenly attributed to Aubrey Beardsley. If you’re not a huge fan of Poe in all media, you may not know what Clarke can do. You can view the uncropped image here. And then you should check out Harry Clarke.