Gaelic. The singer goes to America and sees nothing familiar: not a Christian, horse, cow, sheep, but only roaring wild animals and people. When he meets people from Ireland he realizes he would be fortunate to be home even just to find proper mourners.
The description follows O Boyle's translation. - BS
I would assume that when the singer says he saw no Christians he meant he saw no *Catholics*. This would be almost reasonable if he migrated to, say, New England, especially in the eighteenth or early nineteenth century. - RBW