I don't for a moment believe that the message above was written by Andy M. Stewart. It is quite different from the cordial tone of the correspondence I had with his agent this last week.
I don't know how the Digital Tradition came to attribute the song to Mark Westphal, but I guess a resource is only as accurate as its sources. Here is the text of an e-mail I received from Mark Westphal:

Joe,

I did not write "They Wounded Old Ireland"

I did write:
Pick Up Your Rifle
My Father Once Said to Me
NINA

Best Regards,

Mark Westphal