Ok, Q. The quote you mention is on page 289. Towards the top. The relevant quote is:
(Coppin's words) "....Ben Griffin from Maitland, that wrote Billy Barlow."
Of course you need more information than what's here to make the connection. I used several books and newspaper articles. My findings will be on the Ballad index in time, I believe.

The other quote about "We're All Dodging" is still buried somewhere. I'll keep looking. Cheers, Joy