This summer I was at a singing camp in Ireland. One night we gathered to sing lullabyes, and heard many lovely ones from different parts of the world. I sang the chorus to this one, which I had heard from my mother and which I sang to each of my five children. To our amazement, a women from Ireland sang the same song, with almost identical lyrics and tune. We couldn't figure out how each of us knew the same lullabye. When I got home I Googled it and found this thread. My mother was a great jazz, blues and spiritual lover, and I have to think she heard Paul Robeson's version.