In Dallas there is a local folky named Jed Marum who sings a few historical ballards he wrote about the Civil War and the Irish who fought in it, and some others. He also has songs about other historical events from Ireland and Scotland. One he sings is from the Louisianna Irish Regiment and he claims it is based on the History called Fighting Louisanna Tigers (I think that's the name). This was a part of the Louisianna army raised primarily from the Irish living in and around New Orleans, and they saw lots of action throughout the war between the states. Great song!