By original words, I trust you mean dialect, which is odd, considering that at least one of the Yetties is a 'vurriner' from over the border in Somerset.... or was....And if you check up through my name, you will find that I posted it here last year, in dialect, and am surprised that it didn't get transferred into the digi.
And with only a minor amount of rejigging, it fits to the tune of Jerusalem as well.....
If you want to find out more about William Barnes, Penguin do a great collection of his works called 'Selected Works of William Barnes' and it has a sort of potted life story.
LTS