Pageant (based in Canberra but with members from as far apart as Sydney and Steiglitz) sang this in the mid70s. I never knew where it had come from but I'd put a fair sized bet on Swann Arcade being the critical link. Knowing nothing about the physical environs of Sowerby Bridge we sang "Shibden Glen" and several of us still sing it most years at Nariel. And you'd be surprised where Pageant tapes pop up; I know I am.