Has anyone else noticed the vast sum of folk songs about this trio of lasses? There must be an explanation for this - my suggestions include:

1. Parents of the UK and Ireland upheld the tradition for centuries of calling their female offspring Nancy, Peggy or Molly (boring);

2. In the days of yore, these names were thought of as fancy, romantic and exciting - these names inspired feelings within the breasts of all who heard them sung;

3. Nancy, Peggy and Molly were engaged in an obsessive competition to sleep with as many musicians possible to ensure their immortality through music.

Anyone care to make suggestions? Also, why are all folksong heroes/false young men called Johnny or Willie? I seriously am very curious.