I assume he meant the original novelizations, though I’ve met more than a few people IRL who think the original Star Wars was based on a novel written by George Lucas because the novelization (credited to Lucas, ghostwritten by Alan Dean Foster) was released a good 6 months before the film, and due to the nature of the film’s release, possibly up to a year before the film came out locally for whoever I may have been talking to at the time.
Even then, in the original ROTJ novelization, Owen is actually Ben’s brother, and has no relation to Anakin.