other self

See: alter ego
References in classic literature ?
His other self he had located as a savage and a barbarian living under the primitive conditions of several thousand years before.
As his childhood advanced, he grew more cunning, so that the major portion of all his nights were spent in the open at realizing his other self.
It must be remembered that the description I have just given of the Swift One is not the description that would have been given by Big-Tooth, my other self of my dreams, my prehistoric ancestor.
It is I, the modern, who look back across the centuries and weigh and analyze the emotions and motives of Big-Tooth, my other self.
She could only realize that she herself--her present self--was in some way different from the other self.