An unofficial biography is not the same thing as a work of fiction. In fact, it might be less fictional than an account by that person. So long as the author ha

An unofficial biography is not the same thing as a work of fiction. In fact, it might be less fictional than an account by that person. So long as the author has not invented anything he put's into the book and has fact-checked all of his claims, then it's at least as much a biography as nearly every book you've ever read about a now dead historical figure.