Una Cadegan joined the University of Dayton in 1987 as an Associate Professor for the Department of History. After she received her Bachelor of Arts from the University of Dayton, she attended the University of Pennsylvania, earning a master's and a doctorate in American Civilization. Since the late 1980s, she has been active in faculty development work related to the Catholic intellectual tradition. Her research focuses on the cultural and intellectual history of Roman Catholicism, especially the literary and print culture of the 20th-century United States. Along with contributing her research in numerous journals and books, she wrote All Good Books Are Catholic Books: Print Culture, Censorship, and Modernity in Twentieth-Century America. She also co-edited, along with Father James L. Heft, S.M., the book In the Logos of Love: Promise and Predicament in Catholic Intellectual Life. She has served five times as a mentor for Collegium. She also has been a member of the planning committee for “The Pause at 25,” Collegium’s Summer 2017 celebration of and reflection on its past and future.