To make it clearer, the lyrics posted by RunrigFan are in Old French but the original lyrics I posted are in Old Occitan. Richard's mother was Eleanor of Aquitaine after all and Aquitaine is the Western part of the Occitan speaking area.

@Felipa, the "mie" thing: the actual negative word was (and still is "ne" from Latin from an etymological point of view) but this "ne" is short, unstressed so harder to hear than with any other vowel. So to make the negation more audible they added a word meaning "something little, small, tiny" after the verb to help the understanding, it's why we have "pas" (step) that's become the nowadays main word in the negative form, "mie" (crumble), "point" (dot), "goutte" (drop). Nowadays nobody uses "mie", "goutte" is only used in "on n'y voit goutte", "point" is mainly used in literature. (Wiki article in French about the French negation).