Repetition here-

tar heel posted Vacant Chair in thread 18869 a few years back and it is also in the DT. Vacant Chair

Peregrina, sheet music for "When the Roses Bloom Again" seems to be from the 1870's. Couldn't find an earlier date.

Lorena was popular on both sides. See lyrics and discussion, thread 31209: Lorena

In American Memory, click on Music and enter Civil War Songs. Several pages of titles linked to sheet music or song sheets will be found.

Mudcat thread 8916 has some Civil War songs, lists many, but mostly is comment. Civil War Songs