No, Dick. But just suppose a historical linguist was to analyse that lyric in the belief that it was intact as collected? His conclusions would be nonsense.

These are not just old songs, they are historical documents with a value akin to old letters, invoices, workhouse menus or ship's weighbills. Changing them to any extent is not a crime. But failing to explain that you have done so is liable to be construed by historians if not singers as forgery.

Tom