I too bumped into Duval a few years back at an antique store and restaurant he owned out in hunt country, Virginia. He is a gentleman, an American treasure, and an actor who probably never played a movie role badly. His Apostle is a great moment in American film history, and when the production element ran out of funds he provided his own to see to it the film was completed.
Yes, The Rail Stop in The Plains, VA. A great little restaurant. Though he no longer owns it, he is still a regular there.
Another film he was in - True Confessions - he was absolutely great in. He starred with Robert DeNiro. Any scene without those two in it sucked. The movie shined when either one of the two was in the scene.