O Lochlainn's note indicates (by double asterisks) that he got the words to "The Bantry Girl's Lament" from H. H. Sparling's "Irish Minstrelsy" (London: Walter Scott, 1888). The melody came from Petrie.
Sparling, BTW, was the first anthologist to include the now familiar words of "Johnny, I Hardly Knew Ye."