Uncle Jack plays a major role in
Go Set a Watchman, unlike in
To Kill a Mockingbird. As with other characters of Maycomb, Lee lingers on his eccentric backstory and draws out the humor in it. Uncle Jack didn’t live in Maycomb in the time of
Mockingbird, but years later he is an important part of Jean Louise’s experience of home. As an eccentric who seems the equal of Atticus in intelligence (perhaps unlike Alexandra) he also offers an additional perspective in the novel, as a person who can see Atticus for who he is.