I've been a long time lurker here on the writing forum but this is first time I've posted. Thank you all for your points of view in the past. I've found myself a little stuck with a novel of which I am just finishing my final draft. Without bogging the discussion down with too much plot detail my problem is as follows: The story is written in the first person. The protagonist knows that one of the story's characters is an imposter. I do not want the reader to know this until towards the end of the story. It's been pointed out by my editor that it is odd that narrator refers to this particular character as Steven when he knows his real name is Andrew. I was hoping for some suggestions or hints on ways I can avoid using the character's name in way which feels natural to the reader.