Singer, an Irishman, admonishes listeners to always keep a horseshoe over the door, and lists misfortunes that befell him when he failed to do so, including his wife's "bringing in a horde of her relations."
The version in Beck is fragmentary; I suspect the original is a good deal longer. - PJS
For background on Harrigan and Braham, see the notes to "Babies on Our Block." - RBW