Clearly the carol I am looking for is that which "Q" has so kindly provided - thanks!
- However, it is interesting that the title of the song in the Gardiner Manuscript; or at least Frank Purslow's copied out version on the VWML microfilm is actually - "Shepherd's on their flocks ABIDING".
I wonder if dear old Frank had Kitty's carol in mind when doing his stalwart work?

Tim Radford.