..you seem to miss the point. It is not possible to write an autobiography about someone else. That is a fact, regardless of how Luffers worded his question.
Oxford English Dictionary:
Autobiography: "The story of a person's life written by that person."
Biography: The story of a person's life.
I deleted one of my previous posts because, even using words of 3 or fewer syllables, certain parties couldn't understand these simple and widely acknowledged definitions.
I do repeat again however that I wish Luffers good luck and I was only trying to be constructive! bm