EPN will be thinking of C[ecil J] Sharp, presumably; C [K] Sharpe was an earlier collector (of Scottish song). A century on, we may regret the fact that many of the songs Sharp published were modified; but it was the only way he could get them printed for the general public, and the whole point was to get people singing them again. The texts as originally collected survive. He was a minor offender compared to many, and without his work and the influence it had on others many of us wouldn't even have heard of folk music; and those of us who had would have very little to talk about.