The original tune is at the Levy Collection:

Title: Young Lochinvar From Marmion. A Tale of Flodden Field.
Composer, Lyricist, Arranger: Composed by J. Mazzinghi. [text by Sir Walter Scott].
Sir Walter Scott Publication: New York: W. Dubois, n.d..
Form of Composition: strophic with chorus
Instrumentation: piano and voice
First Line: Oh Young Lochinvar is come out of the west Thro' all the wide border his steed was the best
First Line of Chorus: So Faithful in love and so dauntless in War there never was Knight like the Young Lochinvar [text varies with each verse]

Title: Lochinvar
Composer, Lyricist, Arranger: by Mazzinghi.
Publication: Philadelphia: Carr & Schetky, n.d..
Form of Composition: sectional
Instrumentation: piano and voice (for one, two, or three voices)
First Line: O Young Lochinvar is come out of the west thro all the wide border