Thanks for posting that, Tim.
It was 6 years ago and my short term memory is not what it was. My views haven't changed much since I gave that presentation, but I have another in a couple of weeks which looks at the recycling of previous ballads by the broadside poets which led to drastically different ballads in some cases. For people like Steve and me who regularly classify ballads this can be a minefield when ballads have obviously been rewritten using bits and pieces of other ballads. At what point are they the same ballad or a different ballad? Not an easy question to answer. Hopefully some answers will come out at the Broadside day presentations and discussions in Sheffield.