It's certainly in a lot of old songbooks; it's an English composed song of the 19th Century.  The set that everybody knows, though, is the one that came from the Copper family, who changed the tune a bit (for the better) and in that sense it's traditional.  What you need to do is type rose of allendale into the very useful "Digitrad and Forum Search" box on the main Forum page, which will retrieve a long list of discussions here in which it has been mentioned, and quite a few sets of words for it, some more accurate than others.  You can also see a copy of the original arrangement for piano and voice online at the Lester Levy Sheet Music Collection, but I expect you want the Coppers' variant.

A search for rose of allandale will get you more results, mind, including the DT file with midi.