Joseph Stephen O'Leary is an Irish Roman Catholic theologian. He was born in Cork, Ireland. He studied literature and theology at Maynooth College. He also studied at the Gregorian University, Rome (1972β1973), and in Paris (1977β1979). Ordained for the Diocese of Cork and Ross in 1973, he was a chaplain at University College Cork (1980β1981). He taught theology at the University of Notre Dame (1981β1982) and Duquesne University (1982β1983) before moving to Japan in August 1983. He worked as a researcher at the Nanzan Institute for Religion and Culture, Nanzan University, Nagoya (1985β1986), where he later held the Roche Chair for Interreligious Research (2015β2016). He taught in the Faculty of Letters at Sophia University, Tokyo, from 1988 to 2015.Wikipedia β