Graduate of UCD, BA (1991), PhD (1996). Lecturer in Modern Irish History at UCD 1996-1998. Researcher and writer with Dictionary of Irish Biography 1998-1999. Senior lecturer in Irish History at St Patrick's College, DCU, 1999-2008. Appointed Professor of Modern Irish History at UCD in 2008. Visiting Burns Library Scholar at Boston College 2008-2009. Main research interests: the social, political and cultural history of twentieth century Ireland.