Haven't sung the song for ages but here are the chords I used to use - I think with a capo on position 3. I do now sing 'The Rosemary' and use slightly different chords. The tunes are not exactly the same IMHO.

[Am]Old Pendle, Old Pendle, thou [G]standest [Am]alone
Twixt [F]Burnley and [C]Clitheroe, [G]Whalley and [Am]Colne
Where [F]Hodder and [C]Ribble's fair [G]waters do [Am]meet
With Barley and [G]Downham cont[Am]ent at [G]thy [Am]feet