Might depend where you come from, and what people in your locality know! And what is a renfaire?
In our neck o' the woods, it will be mainly Scottish, with a few Irish, and the occasional American and English. And some mainly for care home gigs! So here is my Scottish list, which probably has a few notable omissions
Killiecrankie
Both Sides o' the Tweed
Rose of Allandale ( but sung as the Corries did it in a martial 4/4!)
Follow the Heron
Doon in the Wee Room
The SS Shieldhall
The Crinan Canal
The Union Canal (and many other songs by Robin Laing)
Pittenweem Joe (and any other John Watt songs)
Mingulay Boat Song
Skye Boat Song
Westering Home
Caledonia (Dougie Maclean)
Any other songs with Caledonia in the title (quite a few!)
Jamie Raeburn
Jamie Foyers
Northern Lights of Old Aberdeen
I belong to Glasgow
Miles and the Road to Dundee
Anything by Matt McGinn
Anything by Jim McLean
Anything by Ewan McVicar
Anything that Hamish Imlach used to sing
Anything by Robert Burns, Tannahill or Fergusson
Auld Lang Syne to the original tune
Anything by Davy Steele
Anything that Tony Cuffe used to sing
Yellow on the Broom (+ anything else by Adam McNaughtan)
Braw Sailing on the Sea
Anything by Jim Reid, including Violet Jacob poems he set to music
Any other of Violet Jacob's poems, which others have set to music
Any of the much requested songs of some of our current talented songwriters.....and I could go on!