Thank you Barbara. I'd say "Luce" has a high probability.
Certainly the new lyrics are not the original poem and stripped of the chorus could represent a new poem in the style of the original. It Could perhaps do with a new title, though there is, I think, no restriction on the use of titles. I'm guessing the new version was composed by one or more members of Kimbers Men.(citation needed—- a they say on wikepedia!)

Brad.