That link works. I'm not sure, however, that the tune much resembles "Garryowen"!

Rex, I've noted several newspaper refs. to "Garryowen" (or "Garione") in U.S. before the Civil War. I don't have the texts handy, but here are the dates and the states:

NY 1818, 1826, 1836, 1843

DC 1823

SC 1823, 1828

VT 1827

TN 1838

NH 1841

MA 1844

ME 1850

Mention of the playing of such tunes by title was rare (no "feature sections" in the press). This many suggests that "Garryowen" was well known in the U.S. by 1861 in Irish-American communities on the East Coast.