Complex sentence: This turns out to be doubly ironic, as the dying Smoke reveals to the young man that Norge lied about Smoke, who is no criminal gunfighter but, quite the contrary, had protected the nearby town from Norge's despotism.
Split into simpler sentences: This turns out to be doubly ironic, as the dying Smoke reveals to the young man that Norge lied. He is no criminal gunfighter but, quite the contrary, had acted to protected the nearby town which had previously suffered from Norge's despotism.