I once heard a radio documentary about Tom Munnelly's song collecting work where he explained how he almost missed recording Martin Howley's "Knight William", an important ballad because he thought Martin wanted to sing him "Granny's Old Armchair".

Martin was telling him again and again that he wanted to sing him "The Old Armchair" and Tom dismissed it as not worth recording and asked for other songs until he finally gave in and was amazed when it turned out to be a unique version of a Child Ballad.