Finally, my brain decided to behave itself and give me a clue.

The Chieftains: Green Fields of America

As I said before, I don't think this is the same tune, but the last phrase of the third line of the tune posted by Lynn reminds me of the same part of this tune, especially in the verse which starts:

"So pack up your sea stores now, consider it no longer
Ten dollars a week isn't very bad pay..."

I may be just muddying the waters. I don't know.

Helen