Back to the Steeleye Span version if anyone is interested, here are the chords for that.

C                G                     D
One fine winter's morning my horn I did blow
       C               D                      G
To the green fields of Keady for hours we did go
   C            G          C            G
We gathered our dogs and we circled them round
D       C               G                           D
For none loves the sport better than the boys in the dell

They don't actually do it in Key of G, but my guitar work is not up to playing in weird keys. Besides, it fits my voice there. Terry definitely sings "dell" in verse 1, and I hear "For hear the long horn that Joe Turner does play". I'm a Kiwi so Terry's accent doesn't throw me as much as it seems to throw you guys.

Regards.