Everything I learned about Quantrell, and all I need to know, came from the movie, "The Dark Command", but here he was called Cantrell. He was ashamed of his mother, he loved the same woman that John Wayne did (and won her), by day he was a mild-mannered school pa, but when the moon was full he was a border raider masquerading as a soldier. Roy Rogers, as his brother-in-law, is killed (probably the only flick in which he died, but he wasn't playing Roy Rogers) trying to help John Wayne escape. Cantrell attacks Lawrence, KS, but Wayne has prepared the town and the raiders are repulsed. Cantrell is killed by his own mother, or kills her...I forget which; at least we know now why he was ashamed of her.