Who is Noel Gardner from Under the Banner of Heaven: A Story of Violent Faith and what is their importance?

Noel Gardner is one of the psychiatrists in Ron's second trial. He believes Ron is not insane, but simply has odd labels and beliefs about common religious teachings. He points out that Ron is both sociable, and enjoys reading, two things that schizophrenics are not able to do. Gardner also points out that in Ron's group, it was the norm to receive instructions from God. Therefore, it is not insane to do something considered normal for one's own group.