Pseudolus, Did you mean "Mary Mack" or is there another song called "Mark Mack?"
For me, "Mountains O' Mourne" and "Roddy McCorley" are must-sings for most St. Patrick's gigs, as is--say what you like--MacNamara's Band (including the verse about "Uncle Yoolius... fum Sveden...playing in an Irish band."
Genie