Edgar Poe was probably his name at birth though there is no surviving birth certificate. After his natural parents died, he was taken in by foster parents John and Frances Allan. They had Poe baptized as Edgar Allan Poe.
His fathered split up with his mother so he didn't know him very well.
Edgar Rosenberg's birth name is Edgar A. Rosenberg.
Edgar Selwyn's birth name is Edgar Simon.
Edgar Tafel's birth name is Edgar A. Tafel.
Edgar Morin's birth name is Edgar Nahoum.
Edgar Willy's birth name is Dobbelaere, Edgar.
Edgar Brasil's birth name is Hauschildt, Edgar.
Edgar Anzola's birth name is Edgar Jan Anzola.
Edgar Saltus's birth name is Edgar Evertson Saltus.
Edgar Bergen's birth name is Edgar John Berggren.
Edgar Oganesyan's birth name is Edgar Sergeyi Hovhannisyan.
Edgar Renteria's birth name is Edgar Enrique Rentera.