Years back at Cleethorpes Folk Festival, Bill Meek told the story of the song.
Fiddlers Green was mentioned in a newspaper column known as "The Old Codgers", which answered obscure questions sent in by members of the public. John and Bill saw the article and decided that the subject of a Fishermans Heaven" ought to have a song written, so each set out to see who could write the best song on the theme. After comparing songs they both decided that John had won the bet.
So, somehere there is another song by Bill Meeks also about fiddlers Green.
Quack!
GtD.