just because two scholars HAVE cast doubts,That does not constitute proof,it will never be proven.
so Instead of wasting time,wringing your hands at the[alleged] dastardly doings of Bert Lloyd,you should let the matter got to rest.
to cast doubts on the penguin book of English folk songs is equally stupid,the book was edited by two people Vaughan Williams and Lloyd,the songs should be judged on their merit,which should be the criteria for judging every song, I do not choose to sing songs because they are English[thats BNP territory]neither do I choose them because they are not contemporary or because they are traditional.there are a few Traditional songs I detest [eg LordRandall]