Thanks also for your thread very interesting can't think how you found that site. I was just getting nowhere. So with shaneystar2 and your good self I can now send off.
I guessed because of a past experience, I had failed to solve a (similar) clue where the German word had an � changed to oe for an 'anglicised' spelling in a puzzle....
so this time into Google, I typed .....
Goethe+Erlkonig+Erlkoenig and it comes up on the second page!