The ballad of Molly Bawn (or Polly Vaughan, etc.) is actually one of the more famous ballads that Child DIDN'T collect. Therefore it has no Child number. The DT (in cooperation with the Ballad_L list) has tried to give numbers to these non-Child ballads beginning the numbering where Child left off.The story is not only true; it repeats throughout history to this day. It was only within the last five or ten years that someone in Maine actually shot a woman, mistaking her white clothing for a swan or a deer.
Or, if you're looking for something about "Bawn" that's not this ballad, are you conflating it with another Irish song with "Bawn" in the title, perhaps the "Rocks of Bawn" or "Banks of the Bawn". (Bawn, I understand, is Irish for white-like-snow.)
-Charlie Baum