a little something here
http://www.scotchirish.net/The%20Plantation%20of%20Ulster.php4
and I guess you've seen stuff about the scary tailless/short-tailed/'cutty' black sow / Hwch Ddu Gwta.
but then again, the bit of the ballad here (which no doubt you've seen)
http://www.borderreivers.co.uk/Border%20Villages/Cheswick/Cheswick.htm
is pretty innocuous, so maybe it was just about a Nice black sow. And no doubt pigs would be a bit more obvious thing to sing about in days gone by.
The bit about "Cheese from Cheswick" does sound a bit innocuous, and pigs seem to have been the sings to sing about then.
I would like to think that there is a connection with the, Hwch ddu Gwta, as I found a refference to an old saying, that, " If you had been on Rimside Moor at midnight, and had hold of a black sows tail, then you would not be here to tell the tale"
maybe its just word play on tale and tail, and how could you hold a tailless sows tail anyway?
There are other legends and ghost stories connected with Rimside, so maybe a folk memory of old has survived?
