"003½: The Adventures of James Bond Junior" was a 1967 James Bond spinoff novel written under the pseudonym R. D. Mascott. tThe real name of the author to this day has never been officially revealed by the current owners of the Ian Fleming Estate.
Although the novel is based on a character being the nephew of James Bond, Bond in fact was an only child; however, he does have a son as told in "You Only Live Twice."