There's always Fields of Athenry, Forty-Five Years, and tons of others. There are a couple of "authorized" lyrics for the fiddle tune, Ashokan Farewell. Working Man by Rita MacNeil is pretty good. Cape Breton Lullaby and Song For the Mira and Heading For Halifax are also excellent. Might want to look at The Water is Wide and Wild Mountain Thyme, too.

Lyrics for all of the above are in the DT or the Mudcat Forum.