Mark, I don't find "Tortope D'Osrun" in either book, but will look into this further as it sounds interesting to persue/compare various versions.
Blair, thanks, I should have thought to ask you directly before posting. Tonight I discovered one verse of Cajun words/English translation of this song in the booklet supplied with Dirk Powell's DVD, vol. 1. I'll check with you for comparison to the version you sing.