I had the book read to me at school in 1965. In 1973 I was engaged to a folk guitarist who had a small decorated poster with the words on it and we sang it together in folk clubs in Guildford & thereabouts. We tried to find the Edge that summer (I come from Lancashire) but true to form it eluded us & we gave up! Years later I tried to remember it and being a very basic guitarist myself, played it in Am (Am G C - very basic) Today I listened to The Weird Stone of Brisingumen on Radio 4 and remembered it again. It seems to keep coming up throughout my life, it must be important.
Have fun, Moonzyn