Even though Isabella Gunn is not on suject, I DO suggest contacting Eileen McGann and asking her directly. She's released several CDs I have not heard and she is one of Canada's most prolific writers of original material based on historical subjects. As such, she may very well be aware of Trad songs from the dates you are interested in. it can't hurt to ask.

She really is a treasure and I should just stop procrastinating and buy the CDs of hers I don't have! You can get them on CDBaby or on her website. She's one of the few songwriters writing almost exclusively about Canada. If she doesn't know of any songs in your area of interest, she may well be able to direct you to someone who does.

here's a link to her website:

Eileen McGann's Official Homepage