Hi Joe,
Whilst I appreciate your valuable research, I would need a lot more concrete evidence to tie any of these ballads (excepting Captain Carr) to your local area.

Regarding Lamkin I am personally quite happy with the Flemish connections suggested here and any attempt to attach it to an actual event would be very tenuous.

Personal names and placenames in ballads can be notoriously fickle particularly after the antiquarians have been at them.