Heard Andy M Stewart singing this earlier this year.. he claimed it was an American civil war song..... about a soldier who found himself on the wrong side of enemy lines, with the wrong currency hence "my money it is no good"....

The Christy Moore Songbook says "I learned this song in 1966 from the singing of Mike Waterson of Hull. Ponchartrain is situated outside New Orleans and is reputed to be an American Civil war song about a soldier who found himself on the wrong side of the line after the truce and was helped out of his predicament by a woman."

so there's 2 opinions for you...

slainte

alison