J. J. Allerton is an author about whom very little public information is currently available. The library holds only one work under this name, Once Upon A Planet. His full English name, nationality, dates of birth and death, educational background and writing career are not provided in the existing records, so it is difficult to sketch the outlines of his life. As far as the known information goes, only the title of this work and the author attribution can be confirmed; the book's subject matter, style and reader reception likewise lack verifiable documentation. For an author with so little information, readers would do better to treat the name as an attribution still to be investigated rather than to fill in a life story based on conjecture. Should more bibliographic or biographical material emerge in the future, it may become possible to clarify the genre and literary standing of Once Upon A Planet, but for now the honest statement is this: public information is limited and not yet sufficient for a complete author profile.