The plot of Young Johnstone (Child 88) has some twists and turns. It starts off with what should be a happy situation, with two chaps each having the other's sister for his girlfriend. Then it all goes wrong. It's a great ballad in its classic version and it's also got a modern update from Leslie Haworth, with guns instead of swords and the anti-hero pursued by the police instead of mounted knights. I've only heard this latter version the once, from Leslie Haworth's son, and I'd be delighted to have a recording, if anyone has one.