Correct Brendan Shine paid him a pound to wash down his old lobby.I don't know anyone who claimed No Mans Land as Irish. people may assume that as possibly the most popular version is by the Fureys. And it is more likely that Willie MacBride is Scottish.
How many poeple think Christy Moore wrote Ride On or Missing You. Many people just associate the song with the singer. I don't think there is anything underhand in it.
Mj