Divisions between Irish Roman Catholics and Irish Protestants played a major role in the history of Ireland from the 16th century to the 20th century, especially during the Home Rule Crisis and the Troubles. While religion broadly marks the delineation of these divisions, the contentions were primarily political and they were also related to access to power. For example, while the majority of Irish Catholics had an identity which was independent from Britain's identity and were excluded from power because they were Catholic, a number of the instigators of rebellions against British rule were actually Protestant Irish nationalists, although most Irish Protestants opposed separatism. In the Irish Rebellion of 1798, Catholics and Presbyterians, who were not part of the establishedChurch of Ireland, found common cause.
Irish Catholics are found in many countries around the world, especially in the Anglosphere. Emigration exponentially increased due to the Great Famine which lasted from 1845 to 1852. In the United States, anti-Irish sentiment and anti-Catholicism was espoused by the Know Nothing movement of the 1850s and other 19th-century anti-Catholic and anti-Irish organizations. By the 20th century, Irish Catholics were well established in the United States and today they are fully-integrated into mainstream American society with two Irish Catholic Presidents, John F. Kennedy and Joe Biden, having been elected.
^Evans, Jocelyn; Tonge, Jonathan (2013). "Catholic, Irish and Nationalist: evaluating the importance of ethno-national and ethno-religious variables in determining nationalist political allegiance in Northern Ireland". Nations and Nationalism. 19 (2): 357–375. doi:10.1111/nana.12005.
Anbinder, Tyler (2002). Five Points: The Nineteenth-Century New York City Neighborhood That Invented Tap Dance, Stole Elections and Became the World's Most Notorious Slum. New York: Plume ISBN0-452-28361-2
Anbinder, Tyler, "Moving beyond 'Rags to Riches': New York's Irish Famine Immigrants and Their Surprising Savings Accounts," Journal of American History 99 (December 2012), 741–70.
Barr, Colin (2020). Ireland's Empire: The Roman Catholic Church in the English-Speaking World, 1829–1914. Cambridge: Cambridge University Press. ISBN9781139644327
Bayor, Ronald; Meagher, Timothy (eds.) (1997) The New York Irish. Baltimore: University of Johns Hopkins Press. ISBN0-8018-5764-3
Blessing, Patrick J. (1992). The Irish in America: A Guide to the Literature and the Manuscript Editions. Washington, D.C.: Catholic University of America Press. ISBN0-8132-0731-2
Clark, Dennis (1982). The Irish in Philadelphia: Ten Generations of Urban Experience (2nd Ed.). Philadelphia: Temple University Press. ISBN0-87722-227-4
English, T. J. (2005). Paddy Whacked: The Untold Story of the Irish American Gangster. New York: ReganBooks. ISBN0-06-059002-5
Ebest, Ron. "The Irish Catholic Schooling of James T. Farrell, 1914–23." Éire-Ireland 30.4 (1995): 18-32 excerpt.
Erie, Steven P. (1988). Rainbow's End: Irish-Americans and the Dilemmas of Urban Machine Politics, 1840—1985. Berkeley, California: University of California Press. ISBN0-520-07183-2
Fanning, Charles, and Ellen Skerrett. "James T. Farrell and Washington Park: The Novel as Social History." Chicago History 8 (1979): 80–91.
French, John. "Irish-American Identity, Memory, and Americanism During the Eras of the Civil War and First World War." (PhD Dissertation, Marquette University, 2012). Online
Gleeson. David T. The Green and the Gray: The Irish in the Confederate States of America (U of North Carolina Press, 2013); online review
Ignatiev, Noel (1996). How the Irish Became White. New York: Routledge. ISBN0-415-91825-1
Jensen, Richard. (2002) "'No Irish Need Apply': A Myth of Victimization". Journal of Social History 36.2 pp. 405–429 onlineArchived 2005-02-08 at the Wayback Machine
Kenny, Kevin. "Abraham Lincoln and the American Irish." American Journal of Irish Studies (2013): 39–64.
Kenny, Kevin (2000). The American Irish: A History. New York: Longman, 2000. ISBN978-0582278172
McCaffrey, Lawrence J. (1976). The Irish Diaspora in America. Washington, D.C.: Catholic University of America ISBN0-8132-0896-3
McKelvey, Blake. "The Irish in Rochester An Historical Retrospect." Rochester History 19: 1–16. online, on Rochester New York
Meagher, Timothy J. (2000). Inventing Irish America: Generation, Class, and Ethnic Identity in a New England City, 1880–1928. Notre Dame, Indiana: University of Notre Dame Press. ISBN0-268-03154-1