Let me get this out of the way. Mudcatters have decreed that the feminine name shall be spelled Bonnie and the adjective shall be spelled bonny. Seems like a good idea.

I looked at several versions of Bonny George Campbell at various sites, and the big difference is that some put in the warlike elements (helmet, plume, sword) and some do not. I prefer the song without them. One of the worst things that can happen to a family is that a loved one disappears with never an explanation. The fear and faint hope never end.
Bonny George Campbell is the only song I have ever encountered that acknowledges this terrible human experience.