The "earthly nourris", which is what it should be, is the version in Child, no. 113, written down from recitation of a "venerable lady" of Snarra Voe, Shetland [published 1852]. In Bronson's Trad Tunes (II.564) is the modern text, noted 1938, which has"In Norway land there lived a maid". The tune there is, as Bronson says, "an authentic Mixolydian variant" of a tune associated with "Hynd Horn". It sounds quite haunting, tho I agree that the "Scarlet Ribbons" avatar [you're right there, Dick!!] is a perfect accompaniment to the stark words.
And the Scottish National Dictionary gives "nourice", with various spelling [but NOT 'norris"], meaning "nurse" pure & simple.