Also at Levy:

Title: Mary of Argyle. A Favorite Scotch Song for the Piano-forte or Guitar.
Composer, Lyricist, Arranger: Music by S. Nelson. Words by C. Jefferys.
C. Jefferys Publication: Richmond, VA: Lithographed and Published by Geo. Dunn & Compy., n.d..
Form of Composition: strophic
Instrumentation: piano and voice; guitar
First Line: I have heard the Mavis singing, his love song to the morn
Subject: Love
Subject: Courtship
Call No.: Box: 093 Item: 123

And at American Memory:

Mary of Argyle, a favorite Scotch song (Richmond, Virginia, Geo. Dunn & Compy., 1864)

Mary of Argyle, a favorite Scotch song. The exotics, flowers of song transplanted to Southern soil. (Augusta, Georgia, Blackmar & Bro., [186-])