"Our barque leaves this harbour tomorrow." The singer is leaving Fogo and Katie "my fortune I'm after seeking In a far distant land o'er the sea"
Peacock states "This native love lyric is patterned on a much older Irish song entitled The County I'm Leaving Behind." I considered marking this derivative but I have not seen the base text. - BS
Roud does lump them, but Joe Hickerson, in his notes to "Drive Dull Care Away, Volume 1," says merely that it "seems to be based on" the Irish song. That's separate enough for me. - RBW