David T. Gleeson is a professor of American history at Northumbria University Newcastle upon Tyne. He is the author or editor of numerous books and articles, including most recently The Green and the Gray: The Irish in the Confederate States of America (2013). He is a coinvestigator for the Arts and Humanities Research Council–funded Major Research Project "Locating the Hidden Diaspora: The English in North America in Transatlantic Perspective, 1760–1950". He formerly taught at the College of Charleston in South Carolina, where he also directed the Program in the Carolina Lowcountry and Atlantic World. He teaches courses in nineteenth-century U.S. history and is an expert on American immigration, ethnicity, and race. He is also interested in the transnational elements of U.S. history.
Based on his recent book, the first scholarly study of the subject, Gleeson explains the role of Irish immigrants in the Confederate armed forces and on the homefront. He explains why a largely non-slaveholding population decided to support the Confederacy and continued to do so after its demise through the "Lost Cause."