Of course he did.
Edgar Selwyn's birth name is Edgar Simon.
Edgar Rosenberg's birth name is Edgar A. Rosenberg.
Edgar Brasil's birth name is Hauschildt, Edgar.
Edgar Willy's birth name is Dobbelaere, Edgar.
Edgar Morin's birth name is Edgar Nahoum.
Edgar Tafel's birth name is Edgar A. Tafel.
Edgar Wreford's birth name is Edgar Silvanus Wreford.
Edgar Smirnov's birth name is Smirnov, Edgar Filippovich.
Edgar Saltus's birth name is Edgar Evertson Saltus.
Edgar Kaiser's birth name is Edgar Fosburgh Kaiser.
Edgar Kennedy's birth name is Edgar Livingstone Kennedy.