There's a different version "Margery Grey" by Steve Gillette in SingOut! vol.45 #2 Summer 2001. The tune is different - midi on SO web site here. From the intro in SO: "The poem, in Mrs. Door's words, was 'founded on a half a dozen lines that caught my eye in some newspaper simply stating the fact that a woman of the pioneers, being lost in the woods and unable to cross the Connecticut River, had wandered northward round its source and come down the other side.'"S. in Seattle