John Brunner wrote a few songs too, notably "The H-bombs Thunder", which for some reason doesn't come up under that name anyway in the Digital Tradition, but does on this Digital Tradition Mirror. Tune of Miner's Lifeguard, of course. But not to be confused with John Brune.

John Brune - I knew him years back in the Sixties, via Cecil Sharp House and a spin-off club round the corner at The York and Albany pub. A quirky chap with a good sense of humour and a flexible atitude towards song collecting, (probably) adding in his own verses to, for example, Spanish Ladies and claiming he'd collected them. He was good company.

As for that story in the link, to blame John Brune for that seems a bit thick. Ewan MacColl was a great songwriter and singer, and we owe an enormous debt to him - but he could be extraordinarily arrogant and petty when he chose to be, and this comes across as a prime example.