Noted with the interest the note about Songs of Faith being Christian. Might have something to do with the fact that the original ask was for traditional songs and folk hymns that could be sung in church:)
I, who started that thread, would love to learn songs from other faiths, it just won't help much in my quest to inject(or re-inject) some traditional folk life into the local hymnody. I am very specifically looking for Christian songs so that I can say "Hey, there's other great stuff out there beside "Lord of the Dance" and "Amazing Grace", and Amy Grant. Look at your own faith, the richness of its roots, and remember."
As for the Scots, the Irish, and Dutch... They all fought the English much... The Scots didn't win, the Irish halved-in But the Dutch are their own sovereign such. (Causing great jealousy and fraternity drinking ditties)
Marc B