The contributions of Bert and Ewan are surely beyond any doubt. I have no quibble over Ewan whatsoever, only those who place him on the wrong pedestal. He was not and never claimed to be a folksong scholar, except perhaps much later in life. There was also at one time a tendency, mainly by American scholars, to treat him as some sort of source singer. This would be very misleading, even accounting for the small amount of material he got from his parents.