The song is actually called "Anderson's Coast". When John and Margaret were over a few years ago, and I bought "Pithead in the Fern" (which the Fagan family played accompaniments on) it came with a book of words. The extra verse is in there, with an asterisk indicating that it's not on the CD, and they didn't usually sing it because it made the song too long. Similarly, there is an extra verse to "Kitty Kane" (which I sing).

kitty