Can soda bread be successfully frozen, either baked or in dough form?
Soda bread is a simple quick bread, all of which freeze quite well after being baked (most yeast raised breads do as well).

Wrap it well to prevent freezer burn&mdash;I like to use a large sized freezer-rated zip type bag for freezing breads.

You can also put some waxed paper or parchment between each slice to help you get them out without thawing the whole loaf.