Hmm... Found this thread while looking for info on "Johnny Hart." One of the things I like about it is the fine happy ending. How about --

Crooked Bawbee
Rose of Allendale
Lass of Glen Shee
When You and I Were Young, Maggie
Put on Your Old Gray Bonnet
Long, Long Ago (really, it ends happily!)
You Are My Flower (that's blooming in the wildwood so high)

Jock O'Hazeldean is one of my favorite happy-ending love songs.