Posted this on another thread and I ought to add it here, as well. Roland did see the potential of Marten in himself. On the drop, with Susan, during the blood kiss, “She was, at least for the moment, no longer her own mistress; she might consequently be his. He could do to her what Marten had done to his own mother, if that was his fancy.” W&G, chap vii/section 9/p270. Not that I want to, but it is part of the story, as King wrote it. I don't think it's a tiny similarity, do you?