Just to add another traditional singer mis-hearing songs at least in part to their betterment. Billy Mills used to sing the "Christmas Tree" at Dungworth and always sang "....over the reefs and the drifts of snow......" instead of "roofs". I prefer reefs even though it is almost tautology.

I have a whole book on Reynardine, since I introduced it into the conversation here - I'll take a look see if I can find it and see what it says.

On Wimberley - I have had a number of copies. There is a low cost Dover publications copy - around 1965 -which ought to be around £15 - £22.00 a copy.

Try Alibris.