Came across this site while searching for the origins of the song but looks like no one is any the wiser really! I 1st heard Barges as a Rainbow/Brownie in the late 80's/early 90's in the UK. I was always taught that it was written by someone in Holland (and even sang it at a Thinking Day celebration when our Brownie's were representing Holland). Always knew it as an unfinished song with the 3rd verse being hummed.